Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

Background/Objectives: Musical pleasure is considered to be induced by prediction errors (surprise), as suggested in neuroimaging studies. However, the role of temporal changes in musical features in reward processing remains unclear. Utilizing the Information Dynamics of Music (IDyOM) model, a statistical model that calculates musical surprise based on prediction errors in melody and harmony, we investigated whether brain activities associated with musical pleasure, particularly in the θ, β, and γ bands, are induced by prediction errors, similar to those observed during monetary rewards. Methods: We used the IDyOM model to calculate the information content (IC) of surprise for melody and harmony in 70 musical pieces across six genres; eight pieces with varying IC values were selected. Electroencephalographic data were recorded during listening to the pieces, continuously evaluating the participants’ subjective pleasure on a 1–4 scale. Time–frequency analysis of electroencephalographic data was conducted, followed by general linear model analysis to fit the power-value time course in each frequency band to the time courses of subjective pleasure and IC for melody and harmony. Results: Significant positive fits were observed in the β and γ bands in the frontal region with both subjective pleasure and IC for melody and harmony. No significant fit was observed in the θ band. Both subjective pleasure and IC are associated with increased β and γ band power in the frontal regions. Conclusions: β and γ oscillatory activities in the frontal regions are strongly associated with musical rewards induced by prediction errors, similar to brain activity observed during monetary rewards.

DOI： 10.3390/brainsci14111130

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Publishing type：Research paper (scientific journal)   Publisher：Fuji Technology Press Ltd.  

Extra or supernumerary robotic limbs are actively exploited in the field of body augmentation. The science of self-recognition of additional body parts is an interesting subject. Although the field is primarily led by psychological studies in virtual reality, which facilitate flexible experimental designs, we believe that assessments employing real robots are also essential. In this study, we investigated the sense of body ownership and agency of a dual-arm wearable robotic arm using an inexpensive and safe inflatable structure. We report the results of functional near-infrared spectroscopy (fNIRS) analysis of brain activity during the use of the robotic arm. The questionnaire results from the experiment, which involved a button-touching task, revealed that both the sense of ownership and sense of agency were significantly higher in the goal-oriented collaborative experience compared to the non-goal-oriented condition. This indicates that humans feel ownership of and agency toward an autonomous robot or a remote-controlled robotic arm operated by another person. The analysis of the fNIRS data included a two-factor analysis of variance for the learning and trial phases. While there was no main effect for the conditions within each phase, a significant interaction was observed between the two brain regions of the right angular gyrus and right postcentral gyrus.

DOI： 10.20965/jrm.2024.p0856

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Publishing type：Research paper (scientific journal)   Publisher：Frontiers Media SA  

Background

Research on music-induced emotion and brain activity is constantly expanding. Although studies using inter-subject correlation (ISC), a collectively shared brain activity analysis method, have been conducted, whether ISC during music listening represents the music preferences of a large population remains uncertain; additionally, it remains unclear which factors influence ISC during music listening. Therefore, here, we aimed to investigate whether the ISCs of electroencephalography (EEG) during music listening represent a preference for music reflecting engagement or interest of a large population in music.

Methods

First, we selected 21 pieces of music from the Billboard Japan Hot 100 chart of 2017, which served as an indicator of preference reflecting the engagement and interest of a large population. To ensure even representation, we chose one piece for every fifth song on the chart, spanning from highly popular music to less popular ones. Next, we recorded EEG signals while the subjects listened to the selected music, and they were asked to evaluate four aspects (preference, enjoyment, frequency of listening, and arousal) for each song. Subsequently, we conducted ISC analysis by utilizing the first three principal components of EEG, which were highly correlated across subjects and extracted through correlated component analysis (CorrCA). We then explored whether music with high preferences that reflected the engagement and interest of large population had high ISC values. Additionally, we employed cluster analysis on all 21 pieces of music, utilizing the first three principal components of EEG, to investigate the impact of emotions and musical characteristics on EEG ISC during music listening.

Results

A significant distinction was noted between the mean ISC values of the 10 higher-ranked pieces of music compared to the 10 lower-ranked pieces of music [t(542) = −1.97, p = 0.0025]. This finding suggests that ISC values may correspond preferences reflecting engagement or interest of a large population. Furthermore, we found that significant variations were observed in the first three principal component values among the three clusters identified through cluster analysis, along with significant differences in arousal levels. Moreover, the characteristics of the music (tonality and tempo) differed among the three clusters. This indicates that the principal components, which exhibit high correlation among subjects and were employed in calculating ISC values, represent both subjects’ arousal levels and specific characteristics of the music.

Conclusion

Subjects’ arousal values during music listening and music characteristics (tonality and tempo) affect ISC values, which represent the interest of a large population in music.

DOI： 10.3389/fnhum.2023.1225377

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

Mixed-reality (MR) environments, in which virtual objects are overlaid on the real environment and shared with peers by wearing a transparent optical head-mounted display, are considered to be well suited for collaborative work. However, no studies have been conducted to provide neuroscientific evidence of its effectiveness. In contrast, inter-brain synchronization has been repeatedly observed in cooperative tasks and can be used as an index of the quality of cooperation. In this study, we used electroencephalography (EEG) to simultaneously measure the brain activity of pairs of participants, a technique known as hyperscanning, during a cooperative motor task to investigate whether inter-brain synchronization would be also observed in a shared MR environment. The participants were presented with virtual building blocks to grasp and build up an object cooperatively with a partner or individually. We found that inter-brain synchronization in the cooperative condition was stronger than that in the individual condition (F(1, 15) = 4.70, p < 0.05). In addition, there was a significant correlation between task performance and inter-brain synchronization in the cooperative condition (rs = 0.523, p < 0.05). Therefore, the shared MR environment was sufficiently effective to evoke inter-brain synchronization, which reflects the quality of cooperation. This study offers a promising neuroscientific method to objectively measure the effectiveness of MR technology.

DOI： 10.3390/virtualworlds2020008

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/s22135059

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.neuropsychologia.2021.107952

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Frontiers Media SA  

<bold>Background:</bold> There is increasing evidence that the stochastic resonance (SR) phenomenon provided by subthreshold mechanical noise stimulation improves the sensory-motor system. However, the effect of SR on children with developmental coordination disorder (DCD) is unclear. The purpose of this study was to assess whether SR activated by subthreshold vibrotactile noise stimulation of the wrist influences manual dexterity in children with DCD.

<bold>Methods:</bold> A double-blind interventional study was conducted. Participants were 30 children (age: 9.3 ± 1.44 years, range 6–11 years; 27 male, three female; 25 right-handed, five left-handed) meeting DCD diagnostic criteria in DSM-5. The manual dexterity test was administered the day before SR intervention (baseline-data). SR was elicited using subthreshold vibrotactile noise stimulation at 60% of the vibrotactile threshold measured at the wrist. SR was delivered two times and the manual dexterity test was administered during each SR stimulation block (SR-on condition) and after each SR stimulation block (SR-off), for a total of four measurements. Target outcomes were the component score, the standard score, and the percentile score of the manual dexterity test.

<bold>Results:</bold> The manual dexterity test scores in the SR-on condition were significantly improved compared to scores at the baseline and in the SR-off condition (<italic>p</italic> &amp;lt; 0.001).

<bold>Conclusions:</bold> The present study showed that subthreshold noise stimulation eliciting SR significantly improved manual dexterity outcomes in children with DCD during stimulation but not after stimulation. Future studies will need to investigate the carry-over effects of SR stimulation.

DOI： 10.3389/fneur.2021.626608

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Vicarious reward is a phenomenon in which an individual feels as if he/she has received a reward as the result of watching someone else receive a reward. In this study, we used electroencephalography to investigate brain activity while participants watched a preferred player win a competitive game (Rock-Paper-Scissors game). In the experimental task, movie clips showed right hand of the two players and played Rock-Paper-Scissors game. We asked participants to explicitly support or "cheer" for a specific player, and then examined brain activity associated with vicarious reward. For the observed hand movement, previous findings showed that the event-related desynchronization of mu band (8-14 Hz) appeared at the contra-lateral central electrode to the observed hand (If someone sees the right-hand movement, the left central electrode shows the event-related desynchronization of mu-band). During observation of the player, we detected event-related desynchronization of mu band activity in the contra-lateral central electrode as well as mid-frontal beta band (15-22 Hz) activation when the preferred player won. Furthermore, functional connectivity analysis revealed a strong phase synchronization between the contra-lateral central electrode and mid-frontal electrode in the mu band when participants received the vicarious reward. Cross-frequency coupling analysis revealed functional integration between the mu and beta bands at mid-frontal electrode. These results indicate the interaction of mu band observed at contra-lateral electrode and beta band observed at mid-frontal electrode coupling, suggesting a link between the mirror neuron system and the reward system during vicarious reward.

DOI： 10.3389/fnhum.2019.00428

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Language：English   Publishing type：Research paper (scientific journal)  

We investigated whether the inferior parietal lobule (IPL) responds in real-time to multisensory inconsistency during movement. The IPL is thought to be involved in both the detection of inconsistencies in multisensory information obtained during movement and that obtained during self-other discrimination. However, because of the limited temporal resolution of conventional neuroimaging techniques, it is difficult to distinguish IPL activity during movement from that during self-other discrimination. We simultaneously conducted electroencephalography (EEG) and near-infrared spectroscopy (NIRS) with the goal of examining IPL activity with a high spatiotemporal resolution during single reaching movements. Under a visual feedback-delay condition, gamma event-related synchronization (γ-ERS), i.e., an increase in gamma (31-47 Hz) EEG power occurred during reaching movements. This γ-ERS is considered to reflect processing of information about prediction errors. To integrate this temporal information with spatial information from the NIRS signals, we developed a new analysis technique that enabled estimation of the regions that show a hemodynamic response characterized by EEG fluctuation present in the visual feedback-delay condition. As a result, IPL activity was explained by γ-ERS specific to visual feedback delay during movements. Thus, we succeeded in demonstrating real-time activation of the IPL in response to multisensory inconsistency. However, we did not find any correlation between either IPL activity or γ-ERS with the sense of agency. Therefore, our results suggest that while the IPL is influenced by prediction error signals, it does not engage in direct processing underlying the conscious experience of making a movement, which is the foundation of self-other discrimination.

DOI： 10.3389/fnhum.2019.00301

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Judgment of agency involves the comparison of motor intention and proprioceptive/visual feedback, in addition to a range of cognitive factors. However, few studies have experimentally examined the differences or correlations between delay detection ability and judgment of agency. Thus, the present study investigated the relationship between delay detection ability and agency judgment using the delay detection task and the agency attribution task. Fifty-eight participants performed the delay detection and agency attribution tasks, and the time windows of each measure were analyzed using logistic curve fitting. The results revealed that the time window of judgment of agency was significantly longer than that of delay detection, and there was a slight correlation between the time windows in each task. The results supported a two-step model of agency, suggesting that judgment of agency involved not only comparison of multisensory information but also several cognitive factors. The study firstly revealed the model in psychophysical experiments.

DOI： 10.1371/journal.pone.0219222

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In the rubber hand illusion (RHI), the subject recognizes a fake hand as his or her own. We recently found that the observation of embodied fake hand movement elicited mu-rhythm (8-13 Hz) desynchronization on electroencephalography (EEG), suggesting brain activation in the sensorimotor regions. However, it is known that mu-rhythm desynchronization during action observation is confounded with occipital alpha-rhythm desynchronization, which is modulated by attention. This study examined the independence of brain activities in the sensorimotor and occipital regions relating to the movement observation under the RHI. The invisible participant's left and fake right hands were stroked simultaneously, which was interrupted by unexpected fake hand movements. A mirror-reversed image of the fake hand was shown on a monitor in front of the participant with a delay of 80, 280, or 480 ms. Illusion strength decreased as a function of the delay. EEG independent component analysis (ICA) and ICA clustering revealed six clusters with observation-induced desynchronization of 8-13 Hz frequency band. In the right sensorimotor cluster, mu-rhythm desynchronization was the greatest under the 80-ms delay, while alpha-rhythm desynchronization of the occipital clusters did not show delay-dependence. These results suggest that brain activation in the sensorimotor areas (i.e., mu-rhythm desynchronization) induced by embodied fake hand movement is independent of that in the occipital areas (alpha-rhythm desynchronization).

DOI： 10.3389/fnhum.2019.00367

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Developmental coordination disorder (DCD) is the most common childhood movement disorder. It is characterized by clumsiness of fine and gross motor skills in developing children. Children with DCD have low ability to effectively use tactile information for movements, instead relying on visual information. In addition, children with DCD have deficits in visuo-motor temporal integration, which is important in motor control. These traits subsequently lead to clumsiness of movements. Conversely, however, imperceptible vibrotactile noise stimulation (at 60%-intensity of the sensory threshold) to the wrist provides stochastic resonance (SR) phenomenon to the body, improving the sensory and motor systems. However, the effects of SR have not yet been validated in children with DCD. Thus, we conducted a single case study of a 10-year-old boy with a diagnosis of DCD to investigate the effect of SR on visual dependence, visuo-motor temporal integration, and manual dexterity. SR was provided by vibrotactile noise stimulation (at an intensity of 60% of the sensory threshold) to the wrist. Changes in manual dexterity (during the SR on- and off-conditions) were measured using the manual dexterity test of the Movement Assessment Battery for Children-2nd edition. The point of subjective equality measured by visual or tactile temporal order judgment task served as a quantitative indicator reflecting specific sensory dependence. The delay detection threshold and steepness of delay detection probability curve, which were measured using the delayed visual feedback detection task, were used as quantitative indicators of visuo-motor temporal integration. The results demonstrated alleviated visual dependence and improved visuo-motor temporal integration during the SR on-conditions rather than the SR off-conditions. Most importantly, manual dexterity during the SR on-conditions was significantly improved compared to that during the SR off-conditions. Thus, the present results highlighted that SR could contribute to improving poor movement in children with DCD. However, since this was a single case study, a future interventional study with a large sample size is needed to determine the effectiveness of SR for children with DCD.

DOI： 10.3389/fneur.2019.00717

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Cognitive Science Society  

&emsp;Severe pain/pain-related fear prevent improvement of motor function, hence rehabilitation for pain is one of most important matter in clinical practice. Recent studies revealed that pain perception was modulated with multi-modality (e.g. visual information, auditory information). Seeing own body which projected on the mirror or virtual space reportedly attenuate pain perception, such attenuate effect was called "Visually induced analgesia". Additionally, seeing size/color manipulated own body reportedly attenuated pain perception much further. However, we reported seeing rubber hand which appearance was manipulated to elicit participants negative emotion. We conducted such rubber hand illusion paradigm using "injured rubber hand" to evoke unpleasantness associated with pain, a "hairy rubber hand" to evoke unpleasantness associated with embarrassment, and a "twisted rubber hand" to evoke unpleasantness associated with deviation from the concept of normality. The pain threshold was lower under the "injured rubber hand" condition than with the other condition. Such modulation of pain perception could not be adequately interpreted as cross-modal shaping pain. Therefore, we thought again about "cross-modal shaping pain" in the perspective from projection science, hence then proposed new pain rehabilitation model in the review article. We particularly focused on the process of back-projection which has potential to improve pain-related negative emotion and distorted body image. The proposed rehabilitation model would be an opportunity for future interdisciplinary approaches.

DOI： 10.11225/jcss.26.30

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DOI： 10.1371/journal.pone.0209382

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DOI： 10.4236/psych.2018.915174.

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48th Annual Meeting of the Society for Neuroscience (SfN2018), Online Proceedings, 077.23

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Trends in Mindfulness (TiM2018)

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48th Annual Meeting of the Society for Neuroscience (SfN2018)

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DOI： 10.3389/fpsyg.2018.00948

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DOI： 10.3389/fneur.2018.00709

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The neurological basis of developmental coordination disorder (DCD) is thought to be deficits in the internal model and mirror-neuron system (MNS) in the parietal lobe and cerebellum. However, it is not clear if the visuo-motor temporal integration in the internal model and automatic-imitation function in the MNS differs between children with DCD and those with typical development (TD). The current study aimed to investigate these differences. Using the manual dexterity test of the Movement Assessment Battery for Children (second edition), the participants were either assigned to the probable DCD (pDCD) group or TD group. The former was comprised of 29 children with clumsy manual dexterity, while the latter consisted of 42 children with normal manual dexterity. Visuo-motor temporal integration ability and automatic-imitation function were measured using the delayed visual feedback detection task and motor interference task, respectively. Further, the current study investigated whether autism-spectrum disorder (ASD) traits, attention-deficit hyperactivity disorder (ADHD) traits, and depressive symptoms differed among the two groups, since these symptoms are frequent comorbidities of DCD. In addition, correlation and multiple regression analyses were performed to extract factors affecting clumsy manual dexterity. In the results, the delay-detection threshold (DDT) and steepness of the delay-detection probability curve, which indicated visuo-motor temporal integration ability, were significantly prolonged and decreased, respectively, in children with pDCD. The interference effect, which indicated automatic-imitation function, was also significantly reduced in this group. These results highlighted that children with clumsy manual dexterity have deficits in visuo-motor temporal integration and automatic-imitation function. There was a significant correlation between manual dexterity, and measures of visuo-motor temporal integration, and ASD traits and ADHD traits and ASD. Multiple regression analysis revealed that the DDT, which indicated visuo-motor temporal integration, was the greatest predictor of poor manual dexterity. The current results supported and provided further evidence for the internal model deficit hypothesis. Further, they suggested a neurorehabilitation technique that improved visuo-motor temporal integration could be therapeutically effective for children with DCD.

DOI： 10.3389/fneur.2018.00114

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Frontiers Media SA  

DOI： 10.3389/fpsyg.2018.02111

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In the rubber hand illusion (RHI), individuals perceive a fake hand as their own when the hidden real hand and visible fake hand are synchronously stroked. Several RHI studies have reported that visual manipulation of the embodied fake hand inversely affects the perceptual processing of the observer's own hand (e.g., thermal or pain sensitivity). In this study, we examined whether motor manipulation of the fake hand similarly affects the observer's motor system. Our study employed a novel RHI paradigm wherein stroking was interrupted by unexpected movement of the fake hand (i.e., finger spreading) while measuring electroencephalography (EEG). We found that participants often spontaneously moved their hands in accordance with the movement of the fake hand only in the RHI (synchronous) sessions. EEG analyses revealed enhanced neural activation (mu-rhythm desynchronization) of the motor system during observation of the fake hand movement. Moreover, motor activation was greater in the synchronous than in the asynchronous condition and significantly correlated with the feeling of body ownership over the fake hand. These findings provide strong behavioral and neurophysiological evidence of 'motor back projection', in which the movement of an illusory embodied body part is inversely transferred to the sensorimotor system of the observer.

DOI： 10.1016/j.neuropsychologia.2018.01.023

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DOI： 10.1111/jpr.12202

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Activation of motor-related regions with illusory kinesthesia had been suspected to contribute toward pain alleviation. We used electroencephalography (EEG) to assess the sensorimotor cortex activation during illusory kinesthesia by vibratory tendon stimulation in patients who were in pain. We investigated the relationship between the sensorimotor cortex and postoperative pain to clarify the analgesia mechanism. Patients who had undergone distal radius fracture surgery were studied. A hand massager provided the vibration stimulus for the illusory kinesthesia on the extensor digitorum muscle at the nonaffected hand's wrist joint on 7 consecutive days starting 1 day after surgery. The main outcomes were pain intensity and EEG activity. EEG activity was recorded during illusory kinesthesia. We also analyzed the high α rhythm (10-12 Hz) event-related desynchronization/event-related synchronization. The pain intensity was reduced. Attenuation of the high α wave was observed in the bilateral sensorimotor cortex (C3ch, C4ch) areas during illusory kinesthesia. A significant negative correlation was also observed in the C3 and the C4 of event-related desynchronization/event-related synchronization% values and the variation of pain amelioration at rest. Activation of the sensorimotor cortex by illusory kinesthesia might have influenced parts of the descending pain-inhibitory system. The postoperative pain in the patients might have been alleviated by the descending pain-inhibitory system.

DOI： 10.1097/WNR.0000000000000874

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DOI： 10.1016/j.bandc.2017.08.002

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DOI： 10.1038/srep41056

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DOI: 10.4236/psych.2017.814146

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Human Movement Science  

doi: 10.1016/j.humov.2017.09.003.

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DOI:10.1016/j.neuropsychologia.2018.01.023.

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Dove Medical Press Ltd.  

DOI： 10.2147/NAN.S98168

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Cognitive Science Society  

Language acquisition is a process of symbol grounding, which is construction of sym-<br>bol systems adapted to environment. Environmental adaptation defines the values<br> which cognitive agents pursue primarily by means of hypothesis-test cycles encompass-<br>ing both the inside and outside of their bodies. In addition to these directly grounded<br> cycles, there are also hypothesis-test cycles within cognitive agents. Cognitive processes<br> are combinations of these cycles, where cycles embody typical cognitive phenomena such<br> as navigation and language use.<br> Cycles are essentially countable, so that systems comprising cycles necessarily have<br> discrete structures. A cognitive agent is hence formulated as a discrete system consist-<br>ing of cycles including both directly grounded cycles and symbols (indirectly grounded<br> cycles), where each cycle embodies some value or meaning directly or indirectly associ-<br>ated with environmental adaptation. Computational models of cognition as combina-<br>tion of such cycles (values = meanings) are far more efficient (simpler and less prone to<br> overdesign) than traditional models stipulating possibly non-cyclic information flows.<br> Environmental-adaptation cycles operate at multiple spatiotemporal scales, including<br> real-time adaptive behavior, middle-term learning, and evolution across generations. It<br> is vitally important to address real-time adaptation behavior in terms of cycles, which<br> will raise the efficiency of the computational model not only at the level of real-time<br> adaptation but also accordingly at higher levels. Cycle-based (meaning-based) com-<br>putational models are necessary also because cycles derive meta-level constraints such<br> as symmetry bias and naming insight, which are indispensable for abductive reasoning<br> and language acquisition.<br> Existing technologies including deep learning fail to reflect such a value-based<br> (meaning-based) architecture of cognition. For the sake of thorough symbol grounding,<br>novel approaches are necessary which should integrate environmental-adaptation cycles <br>in the entire computational model at multiple levels of meaning and value.

DOI： 10.11225/jcss.23.65

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：THE VIRTUAL REALITY SOCIETY OF JAPAN  

In this study, we examined whether the activation of the mirror neuron system is influenced by the spatial accuracy of sound field reproduction using an auditory virtual reality system. In the experiment, we measured the brain activity during listening to action-related and nonaction-related sounds with electroencephalography using mu rhythm suppression as an index of motor cortical activation. Also, we set three sound reproduction conditions: 'spatialized (valid)', 'non-spatialiezed (invalid)' and 'monaural' conditions. In both spatialized and non-spatialized condition, the sound stimuli were presented through 96-ch. loud speakers. The results showed that the mu-suppression for action-related sounds was significantly larger in the spatialized sound conditions than the non-spatialized and the monaural conditions, and suggested that the mirror neuron activation was influenced by the spatial accuracy of sound field reproduction. These results suggest the possibilities to use mirror neuron activation as an objective measure for 'plausibility illusion' of virtual reality systems.

DOI： 10.18974/tvrsj.21.1_73

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DOI： 10.3389/fnhum.2015.00688

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DOI： 10.1088/1741-2560/12/6/066004

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DOI： 10.1097/WNR.0000000000000347

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DOI： 10.2224/sbp.2015.43.7.1123

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Other Link： http://search.jamas.or.jp/link/ui/2014391421

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DOI： 10.1016/j.neures.2014.04.009

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DOI： 10.1097/WNR.0000000000000079

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DOI： 10.1016/j.neuroimage.2013.05.071

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1109/EMBC.2013.6611270

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PubMed

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.bandc.2012.04.006

Web of Science

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1109/ICCME.2012.6275738

Scopus

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Japanese Cognitive Science Society  

This study investigated the effects of rotation and delay of visual feedback on self-body movement recognition. In the present experiment, visual feedback of subject's hand movement was delayed by hundreds of milliseconds and rotated by 0-270&deg;(at 90&deg; intervals). The subject was required to judge the temporal discrepancy between the hand movement and its visual feedback in a forced-choice manner. In one group the subject was instructed to move their own hand at the experimenter's instruction (active movement), while in another group the subject's hand was moved by the experimenter (passive movement). The results showed that the delay detection rate was increased as the delay length becomes larger both in active and passive movements. Statistical analyses revealed that rotation of visual feedback has an effect to elongate the delay detection threshold (50% detection rate), and the threshold was significantly longer in the 180&deg; rotation condition than in the 0&deg; rotation condition. The steepness of delay detection curve was significantly steeper in active than passive movement. However, there was no significant interaction between rotation and movement (active &frasl; passive) factors. We suppose independent effects of rotation and delay of visual feedback on self-body recognition.

DOI： 10.11225/jcss.18.41

CiNii Research

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.neuropsychologia.2010.03.012

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.bandc.2009.11.005

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1007/s00221-009-2028-6

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1371/journal.pone.0008034

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1371/journal.pone.0006185

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1097/WNR.0b013e32832d2d36

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Language：English   Publishing type：Research paper (international conference proceedings)  

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DOI： 10.1016/j.neuroimage.2006.03.044

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.neuroimage.2004.10.039

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.cogbrainres.2004.04.004

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：English   Publishing type：Research paper (international conference proceedings)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Book type：Scholarly book

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Language：Japanese   Book type：Scholarly book

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Language：Japanese   Book type：Scholarly book

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Language：Japanese   Book type：Scholarly book

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Responsible for pages：pp.21-57  

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Responsible for pages：59-77   Language：Japanese   Book type：Scholarly book

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Responsible for pages：133-141   Language：Japanese   Book type：Scholarly book

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Presentation type：Public lecture, seminar, tutorial, course, or other speech  

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Language：Japanese   Presentation type：Oral presentation (invited, special)  

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Language：Japanese   Presentation type：Oral presentation (invited, special)  

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