| Item type |
学位論文 / Thesis or Dissertation(1) |
| 公開日 |
2010-02-22 |
| タイトル |
|
|
タイトル |
Magnetoencephalographic responses evoked by various types of visual apparent motion stimuli |
| タイトル |
|
|
タイトル |
Magnetoencephalographic responses evoked by various types of visual apparent motion stimuli |
|
言語 |
en |
| 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_46ec |
|
資源タイプ |
thesis |
| 著者名 |
田中, 絵実
|
| フリガナ |
タナカ, エミ
|
| 著者 |
TANAKA, Emi
|
| 学位授与機関 |
|
|
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学位授与機関名 |
総合研究大学院大学 |
| 学位名 |
|
|
学位名 |
博士（理学） |
| 学位記番号 |
|
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内容記述タイプ |
Other |
|
内容記述 |
総研大甲第1071号 |
| 研究科 |
|
|
値 |
生命科学研究科 |
| 専攻 |
|
|
値 |
20 生理科学専攻 |
| 学位授与年月日 |
|
|
学位授与年月日 |
2007-03-23 |
| 学位授与年度 |
|
|
値 |
2006 |
| 要旨 |
|
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内容記述タイプ |
Other |
|
内容記述 |
The human visual system is considered to have at least two different mechanisms for Perceiving motions: one is for luminance-based(first-order)motions and the other for non-luminance-based(second-order)motions. It is still controversial whether thesemotions are processed by a common neural mechanism .Few studies have investigated the neural processes involved in second-order motions even though it is known that there are various kinds of second-order motions that may be processed by distinct mechanisms. In this study, I examined the perception of first-and second-order motions using four different types of stimulus attributes(luminance,contrast,texture,and flicker)in the same experimental paradigm,and used whole head magnetoencephalography(MEG)to measure human brain response to apparent motion of these four stimulus cues.MEG responses to all stimuli were recorded from the occipito-emporal area (possibly human MT/V5+),and response properties (peak latency and amplitude>varied with stimulus cues.Further,I observed various effects of luminance-addition to the non-luminance cues on the response properties that could not be explained by the distribution of the magnetic field strength and /or the visibility of the stationary object defined by the cues.The results indicate that differences in response properties elicited by various stimulus cues represent differences in the neural processes underlying apparent motions with various cues. Together with previous studies that indicated a common mechanism for the perception of apparent motion, I consider that the distinct 「reprocessing」of each stimuls cue occurs before the common process for apparent motion, and the response property changes associated with different cues were related to differences in the preprocessing that may occur within MT/V5+ and a widely distributed cortical network including the primary visual cortex and the extrastriate cortex. |
| 所蔵 |
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|
値 |
有 |
要旨・審査要旨 (198.0 kB)
