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Pure representational neglect after right thalamic lesion
Author(s) -
Ortigue Stéphanie,
ViaudDelmon Isabelle,
Ani JeanMarie,
Landis Theodor,
Michel Christoph,
Blanke Olaf,
Vuilleumier Patrik,
Mayer Eugène
Publication year - 2001
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.1139
Subject(s) - neglect , perceptual disorders , perception , representation (politics) , psychology , cognitive psychology , unilateral neglect , mental image , thalamus , visual perception , neuroscience , cognition , psychiatry , politics , political science , law
After a right thalamic stroke, an 86‐year‐old man presented an acute pure left representational neglect in the absence of any perceptual neglect. On spatial mental imagery tasks, the patient systematically omitted items located on his left side, but only when a vantage point was given. This suggests that (1) pure representational neglect is not just a residual finding after recovery from global (perceptual and representational) neglect; (2) space representation can be coded by two independent processes: in viewer‐centered or world‐based (allocentric) coordinates; and (3) the right thalamus serves as a relay in the processing of spatial visual imagery.