The functional anatomy of the McCollough contingent colour after-effect

被引:24
作者
Barnes, J
Howard, RJ
Senior, C
Brammer, M
Bullmore, ET
Simmons, A
David, AS
机构
[1] Inst Psychiat, Dept Psychol Med, London SE5 8AZ, England
[2] Inst Psychiat, Dept Old Age Psychiat, London SE5 8AZ, England
[3] Inst Psychiat, Dept Biostat & Comp, London SE5 8AZ, England
[4] Inst Psychiat, Dept Neuroimaging, London SE5 8AZ, England
[5] Kings Coll London, Sch Med & Dent, London SE5 8AZ, England
基金
英国惠康基金;
关键词
colour perception; functional MRI; McCollough effect; ventrolateral pre-frontal cortex;
D O I
10.1097/00001756-199901180-00037
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
WE report two functional magnetic resonance imaging (fMRI) experiments which reveal a cortical network activated when perceiving coloured grids, and experiencing the McCollough effect (ME). Our results show that perception of red-black and green-black grids activate the right fusiform gyrus (area V4) plus the left and right lingual gyri, right striate cortex (V1) and left insula. The ME activated the left anterior fusiform gyrus as well as the ventrolateral prefrontal cortex, and in common with colour perception, the left insula. These data confirm the critical role of the fusiform gyrus in actual and illusory colour perception as well as revealing localized frontal cortical activation associated with the ME, which would suggest that a 'top-down' mechanism is implicated in this illusion. (C) 1999 Lippincott Williams & Wilkins.
引用
收藏
页码:195 / 199
页数:5
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