R.W. Kentridge
Spatial attention speeds discrimination without awareness in blindsight
Kentridge, R.W.; Heywood, C.A.; Weiskrantz, L.
Authors
C.A. Heywood
L. Weiskrantz
Contributors
A.D. Milner
Editor
Abstract
An intimate relationship is often assumed between visual attention and visual awareness. Using a subject, patient GY, with the neurological condition of ‘blindsight’ we show that although attention may be a necessary precursor to visual awareness it is not a sufficient one. Using a Posner endogenous spatial cueing paradigm we showed that the time our subject needed to discriminate the orientation of a stimulus was reduced if he was cued to the location of the stimulus. This reaction-time advantage was obtained without any decrease in discrimination accuracy and cannot therefore be attributed to speed-error trade-off or differences in bias between cued and uncued locations. As a result of his condition GY was not aware of the stimuli to which processing was attentionally facilitated. Attention cannot, therefore be a sufficient condition for awareness.
Citation
Kentridge, R., Heywood, C., & Weiskrantz, L. (2004). Spatial attention speeds discrimination without awareness in blindsight. Neuropsychologia, 42(6), 831-835. https://doi.org/10.1016/j.neuropsychologia.2003.11.001
Journal Article Type | Article |
---|---|
Publication Date | 2004-06 |
Deposit Date | Mar 30, 2007 |
Journal | Neuropsychologia |
Print ISSN | 0028-3932 |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 42 |
Issue | 6 |
Pages | 831-835 |
DOI | https://doi.org/10.1016/j.neuropsychologia.2003.11.001 |
Keywords | Vision, Attention, Consciousness, Blindsight. |
Public URL | https://durham-repository.worktribe.com/output/1599306 |
Publisher URL | http:/dx.doi.org/10.1016/j.neuropsychologia.2003.11.001 |
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