On-line anosognosia: unawareness for chorea in real time but not on videotape delay.
In hemiplegics, anosognosia (unawareness of deficit) rests on a mismatch between expected and actual movement: a feedback hypothesis emphasizes sensory deficits or neglect, a feedforward hypothesis postulates impaired intention to move. Anosognosia for other problems is less studied. The authors report a man without sensory deficits who was unaware of choreiform movements, except on videotape delay. The authors believe that a feed-forward mechanism underlies his "on-line" unawareness.
Shenker
J I
JI
Department of Neurology, University of Virginia, Charlottesville, VA 22908-0394, USA. jis2p@virginia.edu
Wylie
S A
SA
Fuchs
K
K
Manning
C A
CA
Heilman
K M
KM
D000377:Agnosia / Q000523:psychology*; D002819:Chorea / Q000150:complications / Q000523:psychology*; D003072:Cognition Disorders / Q000150:complications; D004401:Dysarthria / Q000150:complications; D030141:Feedback, Psychological; D020233:Gait Disorders, Neurologic / Q000150:complications; D006801:Humans; D008297:Male; D008875:Middle Aged; D008959:Models, Neurological; D008960:Models, Psychological; D009483:Neuropsychological Tests; D014743:Videotape Recording