Nature Neuroscience
4, 645 - 650 (2001)
doi:10.1038/88477
Neural correlates of change detection and change blindnessDiane M. Beck1, Geraint Rees2, 3, Christopher D. Frith3
& Nilli Lavie11
Department of Psychology, University College London, Gower Street, London WC1E 6BT, UK
2
Institute of Cognitive Neuroscience, Alexandra House, Queen Square, University College London, London WC1N 3AR, UK
3
Wellcome Department of Cognitive Neurology, Institute of Neurology, University College London, 12 Queen Square, London WC1N 3BG, UK
Correspondence should be addressed to Diane M. Beck diane.beck@ucl.ac.ukFunctional magnetic resonance imaging (fMRI) of subjects attempting to detect a visual change occurring during a screen flicker was used to distinguish the neural correlates of change detection from those of change blindness. Change detection resulted in enhanced activity in the parietal and right dorsolateral prefrontal cortex as well as category-selective regions of the extrastriate visual cortex (for example, fusiform gyrus for changing faces). Although change blindness resulted in some extrastriate activity, the dorsal activations were clearly absent. These results demonstrate the importance of parietal and dorsolateral frontal activations for conscious detection of changes in properties coded in the ventral visual pathway, and thus suggest a key involvement of dorsal−ventral interactions in visual awareness.
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