Dissociating perceptual and motor effects of prism adaptation in neglect.

Abstract:

:Prism adaptation reduces some symptoms of neglect; however the mechanisms underlying such changes are poorly understood. We suggest that prisms influence neglect by acting on dorsal stream circuits subserving visuomotor control, with little influence on perceptual aspects of neglect. We examined prism adaptation in three neglect patients and a group of healthy controls on line bisection and landmark tasks. Neglect patients showed a dramatic reduction in the rightward bias for line bisection, but absolutely no change in their leftward bias on the landmark task, which is a perceptual equivalent to bisection. However, in controls, prisms produced 'neglect-like' deficits on both the line bisection and landmark tasks. These data suggest that prisms influence visually guided actions more so than perception in neglect.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Striemer CL,Danckert J

doi

10.1097/WNR.0b013e328338592f

subject

Has Abstract

pub_date

2010-04-21 00:00:00

pages

436-41

issue

6

eissn

0959-4965

issn

1473-558X

journal_volume

21

pub_type

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