Attention modulates neuronal correlates of interhemispheric integration   and global motion perception

doi:10.1167/14.12.30

CORC > 北京大学 > 心理与认知科学学院

	Attention modulates neuronal correlates of interhemispheric integration and global motion perception
	Akin, Burak ; Ozdem, Ceylan ; Eroglu, Seda ; Keskin, Dudu Taslak ; Fang, Fang ; Doerschner, Katja ; Kersten, Daniel ; Boyaci, Huseyin
刊名	journal of vision
	2014
关键词	global motion perception interhemispheric integration fMRI visual brain perceptual experience of unified visual field HUMAN VISUAL-CORTEX SPATIAL ATTENTION AREA MT RETINOTOPIC ORGANIZATION RECEPTIVE-FIELDS OCCIPITAL CORTEX CORTICAL AREA OPTIC FLOW FMRI REPRESENTATION
DOI	10.1167/14.12.30
英文摘要	In early retinotopic areas of the human visual system, information from the left and right visual hemifields (VHFs) is processed contralaterally in two hemispheres. Despite this segregation, we have the perceptual experience of a unified, coherent, and uninterrupted single visual field. How exactly the visual system integrates information from the two VHFs and achieves this perceptual experience still remains largely unknown. In this study using fMRI, we explored candidate areas that are involved in interhemispheric integration and the perceptual experience of a unified, global motion across VHFs. Stimuli were two-dimensional, computer-generated objects with parts in both VHFs. The retinal image in the left VHF always remained stationary, but in the experimental condition, it appeared to have local motion because of the perceived global motion of the object. This perceptual effect could be weakened by directing the attention away from the global motion through a demanding fixation task. Results show that lateral occipital areas, including the medial temporal complex, play an important role in the process of perceptual experience of a unified global motion across VHFs. In early areas, including the lateral geniculate nucleus and V1, we observed correlates of this perceptual experience only when attention is not directed away from the object. These findings reveal effects of attention on interhemispheric integration in motion perception and imply that both the bilateral activity of higher-tier visual areas and feedback mechanisms leading to bilateral activity of early areas play roles in the perceptual experience of a unified visual field.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000344971700024&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Ophthalmology; SCI(E); PubMed; 0; ARTICLE; hboyaci@bilkent.edu.tr; 12; 14
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/341649]
专题	心理与认知科学学院
推荐引用方式 GB/T 7714	Akin, Burak,Ozdem, Ceylan,Eroglu, Seda,et al. Attention modulates neuronal correlates of interhemispheric integration and global motion perception[J]. journal of vision,2014.
APA	Akin, Burak.,Ozdem, Ceylan.,Eroglu, Seda.,Keskin, Dudu Taslak.,Fang, Fang.,...&Boyaci, Huseyin.(2014).Attention modulates neuronal correlates of interhemispheric integration and global motion perception.journal of vision.
MLA	Akin, Burak,et al."Attention modulates neuronal correlates of interhemispheric integration and global motion perception".journal of vision (2014).