Sound alters activity in human V1 in association with illusory visual perception

被引:218
作者
Watkins, S.
Shams, L.
Tanaka, S.
Haynes, J. -D.
Rees, G.
机构
[1] UCL, Inst Cognit Neurosci, London WC1N 3AR, England
[2] UCL, Inst Neurol, Wellcome Dept Imaging Neurosci, London WC1N 3AR, England
[3] Univ Calif Los Angeles, Dept Psychol, Los Angeles, CA 90095 USA
[4] Jin Ai Univ, Fac Human Sci, Takefu, Japan
基金
英国惠康基金;
关键词
D O I
10.1016/j.neuroimage.2006.01.016
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
When a single brief visual flash is accompanied by two auditory bleeps, it is frequently perceived incorrectly as two flashes. Here, we used high field functional MRI in humans to examine the neural basis of this multisensory perceptual illusion. We show that activity in retinotopic visual cortex is increased by the presence of concurrent auditory stimulation, irrespective of any illusory perception. However, when concurrent auditory stimulation gave rise to illusory visual perception, activity in VI was enhanced, despite auditory and visual stimulation being unchanged. These findings confirm that responses in human V1 can be altered by sound and show that they reflect subjective perception rather than the physically present visual stimulus. Moreover, as the right superior temporal sulcus and superior colliculus were also activated by illusory visual perception, together with VI, they provide a potential neural substrate for the generation of this multisensory illusion. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码:1247 / 1256
页数:10
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