Deficits in spatial coding and feature binding following damage to spatiotopic maps in the human pulvinar.
We report a patient with unilateral damage to the rostral part of the pulvinar who was impaired in localizing stimuli in the inferior visual field contralateral to the lesion and who made errors in the binding of shape and color in that quadrant. The findings demonstrate the importance of the pulvinar in spatial coding and provide support for the function of the thalamus in binding of features. They also provide evidence for a homology between the visual field maps of the inferior and lateral subdivisions of the pulvinar in monkeys and in humans, such that the inferior visual field is represented in the rostral part of the nucleus.
Ward
Robert
R
Centre for Cognitive Neuroscience, University of Wales, Bangor LL57 2AS, UK. r.ward@bangor.ac.uk
Danziger
Shai
S
Owen
Vanessa
V
Rafal
Robert
R
D001930:Brain Injuries / Q000503:physiopathology* / Q000523:psychology*; D001931:Brain Mapping; D006801:Humans; D008279:Magnetic Resonance Imaging; D020649:Pulvinar / Q000293:injuries* / Q000503:physiopathology*; D013028:Space Perception / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*