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Neural correlates of conscious and unconscious vision in parietal extinction

Rees, G; Wojciulik, E; Clarke, K; Husain, M; Frith, C; Driver, J; (2002) Neural correlates of conscious and unconscious vision in parietal extinction. Neurocase , 8 (5) pp.387 - 393.

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Abstract

Brain areas activated by stimuli in the left visual field of a right parietal patient suffering from left visual extinction were identified using event-related functional magnetic resonance imaging. Left visual field stimuli that were extinguished from awareness still activated the ventral visual cortex, including areas in the damaged right hemisphere. An extinguished face stimulus on the left produced robust category-specific activation of the right fusiform face area. On trials where the left visual stimulus was consciously seen rather than extinguished, greater activity was found in the ventral visual cortex of the damaged hemisphere, and also in frontal and parietal areas of the intact hemisphere. These findings extend recent observations on visual extinction, suggesting distinct neural correlates for conscious and unconscious perception.

Type: Article
Title: Neural correlates of conscious and unconscious vision in parietal extinction
Additional information: Imported via OAI, 7:29:01 2nd Aug 2007
Keywords: Vision
UCL classification: UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Brain Repair and Rehabilitation
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Imaging Neuroscience
URI: http://discovery.ucl.ac.uk/id/eprint/100333
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