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Brain Advance Access originally published online on July 25, 2008
Brain 2008 131(8):2140-2152; doi:10.1093/brain/awn135
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© The Author (2008). Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Spatial and temporal deficits are regionally dissociable in patients with pulvinar lesions

Isabel Arend, Robert Rafal and Robert Ward

Wolfson Center for Clinical and Cognitive Neuroscience, Bangor University, Gwynedd LL57 2AS, UK

Correspondence to: Dr Robert Ward, School of Psychology, Brigantia Building, Penrallt Road, LL57 2AS, UK E-mail: r.ward{at}bangor.ac.uk

The pulvinar is an important structure for visual attention function. Spatial and temporal attention was examined in three patients with varying pulvinar lesions. Spatial and temporal deficits were dissociable. The patient with anterior damage showed strong spatial but not temporal attention deficits, while the patient with posterior damage showed clear temporal attention deficits, but much reduced spatial problems. A third patient with intermediate damage showed intermediate behaviours. These findings are discussed within the scope of models of visual attention in which the pulvinar facilitates communication between different brain areas: depending upon the specifics of pulvinar damage, communication with different cortical areas may be degraded, thereby producing distinct patterns of deficit.

Key Words: human pulvinar; visual attention; dwell-time; feature binding; neuropsychology

Abbreviations: FEs, feature errors; ICs, illusory conjunctions

Received January 24, 2008. Revised May 27, 2008. Accepted June 4, 2008.


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J. C. Snow, H. A. Allen, R. D. Rafal, and G. W. Humphreys
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PNAS, March 10, 2009; 106(10): 4054 - 4059.
[Abstract] [Full Text] [PDF]


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