Presentation 2007/6/21
Two stages in object-based attentional guidance : Evidence from event-related brain potentials
Tetsuko KASAI,
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Abstract(in English) Attention selects "objects" as the most fundamental unit, which may be achieved through a process where attention automatically spreads within the whole region of an object. The present study examined effects of connectedness (connected/unconnected, thickness of the connecting line) on the attention-spreading over bilateral-stimulus arrays by using event-related brain potentials (ERPs). Directions of attention at the moment were indexed by lateralized potentials that enhanced at the hemisphere contralateral to the attended hemi-field. As a result, electrophysiological effects associated with the attention-spreading were identified in the early phase (150-200 ms post-stimulus) and the later phase (330-390 ms). This indicates that attention is serially guided by hierarchical object representations.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Selective Attention / Object / Visual Grouping / Event-Related Brain Potential
Paper # HIP2007-34
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Committee HIP
Conference Date 2007/6/21(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Two stages in object-based attentional guidance : Evidence from event-related brain potentials
Sub Title (in English)
Keyword(1) Selective Attention
Keyword(2) Object
Keyword(3) Visual Grouping
Keyword(4) Event-Related Brain Potential
1st Author's Name Tetsuko KASAI
1st Author's Affiliation Faculty of Education, Hokkaido University()
Date 2007/6/21
Paper # HIP2007-34
Volume (vol) vol.107
Number (no) 117
Page pp.pp.-
#Pages 6
Date of Issue