| Item type |
論文 / Article(1) |
| 公開日 |
2009-08-19 |
| タイトル |
|
|
タイトル |
Estimation of the Timing of Human Visual Perception from Magnetoencephalography |
|
言語 |
en |
| 作成者 |
Amano, Kaoru
Goda, Naokazu
Nishida, Shin’ya
Ejima, Yoshimichi
Takeda, Tsunehiro
Ohtani, Yoshio
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
Copyright©2006 Society for Neuroscience |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
MEG |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
motion |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
color |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
RT |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Integrator |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
MT+ |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
To explore the timing and the underlying neural dynamics of visual perception, we analyzed the relationship between the manual reaction time (RT) to the onset of a visual stimulus and the time course of the evoked neural response simultaneously measured by magnetoencephalography (MEG). The visual stimuli were a transition from incoherent to coherent motion of random dots and an onset of a chromatic grating from a uniform field, which evoke neural responses in different cortical sites. For both stimuli, changes in median RT with changing stimulus strength (motion coherence or chromatic contrast) were accurately predicted, with a stimulus-independent postdetection delay, from the time that the temporally integrated MEG response crossed a threshold (integrator model). In comparison, the prediction of RT was less accurate from the peak MEG latency, or from the time that the nonintegrated MEG response crossed a threshold (level detector model). The integrator model could also account for, at least partially, intertrial changes in RT or in perception (hit/miss) to identical stimuli. Although we examined MEG–RT relationships mainly for data averaged over trials, the integrator model could show some correlations even for single-trial data. The model predictions deteriorated when only early visual responses presumably originating from the striate cortex were used as the input to the integrator model. Our results suggest that the perceptions for visual stimulus appearances are established in extrastriate areas [around MT (middle temporal visual area) for motion and around V4 (fourth visual area) for color] ~150–200 ms before subjects manually react to the stimulus. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
The Journal of Neuroscience, 26(15), pp3981-3991 |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Submitted by 附属図書館 KIT-Repository (dspace-admin@jim.kit.ac.jp) on 2009-02-23T02:47:21Z No. of bitstreams: 1 200604122615.pdf: 6559078 bytes, checksum: 30be20a72bcd33dd08941a0e080d85c9 (MD5) |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
Made available in DSpace on 2009-02-23T02:47:21Z (GMT). No. of bitstreams: 1 200604122615.pdf: 6559078 bytes, checksum: 30be20a72bcd33dd08941a0e080d85c9 (MD5) Previous issue date: 2006-04-12 |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
Society for Neuroscience |
|
言語 |
en |
| 日付 |
|
|
日付 |
2006-04-12 |
|
日付タイプ |
Issued |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1523/jneurosci.4343-05.2006 |
| 関連情報 |
|
|
|
識別子タイプ |
URI |
|
|
関連識別子 |
http://www.jneurosci.org/cgi/content/full/26/15/3981 |
| 収録物名 |
|
|
収録物名 |
The Journal of Neuroscience |
|
言語 |
en |
| 巻 |
|
|
巻 |
26 |
| 号 |
|
|
号 |
15 |
| 開始ページ |
|
|
開始ページ |
3981 |
| 終了ページ |
|
|
終了ページ |
3991 |
200604122615.pdf (6.3 MB)
