Pointing with left vs right hand in left visual field neglect.
The authors report the detection performances of three subjects with unilateral left visual neglect as they were submitted to a closed-loop manual pointing task in the reaching field. Results show, for all three subjects, better detection performances when manual pointing was executed with the left hand--i.e. contralateral to the lesion--than when made with the right hand. Given that, for both hands, signal detection conditions were the same, these results are discussed according to: other studies having showed changes in the expression of neglect as induced by changes in the nature or the strategy of the task; the concept of an indissociable sensorimotor central processing; and one of the models put forward to account for unilateral spatial neglect which includes a motor representation.
D000368:Aged; D000377:Agnosia / Q000175:diagnosis / Q000473:pathology / Q000523:psychology*; D001288:Attention; D001921:Brain / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D008959:Models, Neurological; D014794:Visual Fields; D014796:Visual Perception