Article abstract
Nature Neuroscience 10, 657 - 662 (2007)
Published online: 1 April 2007 | doi:10.1038/nn1879
Human visual cortex responds to invisible chromatic flicker
Yi Jiang1, Ke Zhou2 & Sheng He1
Abstract
When two isoluminant colors alternate at frequencies of 25 Hz or higher, observers perceive only one fused color. Chromatic flicker beyond the fusion frequency induces flicker adaptation in human observers and stimulates monkey V1 neurons. Here we use functional magnetic resonance imaging (fMRI) to show that many human visual cortical areas, with the exception of VO, can distinguish between fused chromatic flicker and its matched nonflickering control. This result supports the existence of significant intracortical temporal filtering of high-frequency chromatic information. The result also suggests that a considerable difference in cortical activation in many visual cortical areas does not necessarily lead to different conscious experiences.
- Department of Psychology, University of Minnesota, 75 E. River Rd., Minneapolis, Minnesota 55455, USA
- State Key Laboratory of Brain and Cognitive Science, Graduate School and Institute of Biophysics, Chinese Academy of Sciences, 15 Datun Road, Beijing 100101, China
Correspondence to: Sheng He1 e-mail: sheng@umn.edu
MORE ARTICLES LIKE THIS
These links to content published by NPG are automatically generated.
RESEARCH
Verification of enhancement of the CSF space, not parenchyma, in acute stroke patients with early blood?brain barrier disruptionJournal of Cerebral Blood Flow & Metabolism Brief Communication
Cerebral blood flow response in adenosine 2a receptor knockout mice during transient hypoxic hypoxiaJournal of Cerebral Blood Flow & Metabolism Original Article
Functional antigen-independent synapses formed between T cells and dendritic cellsNature Immunology Article (01 Oct 2001)
See all 71 matches for Research
