Citation

Fortis P, Chen P, Goedert KM, Barrett AM. Neuroreport 2011; 22(14): 700-705.

Affiliation

Neuropsychological Laboratory, IRCCS Italian Auxological Institute; Department of Psychology, University of Milano-Bicocca, Milano, Italy, Kessler Foundation Research Center, West Orange; Department of Physical Medicine and Rehabilitation; Graduate School of Biomedical Sciences; Department of Neurology and Neurosciences, University of Medicine and Dentistry of New Jersey-New Jersey Medical School gKessler Institute for Rehabilitation, West Orange and Saddle Brook hDepartment of Psychology, Seton Hall University, South Orange, New Jersey, USA.

Copyright

(Copyright © 2011, Lippincott Williams and Wilkins)

DOI

10.1097/WNR.0b013e32834a3e20

PMID

21817924

PMCID

PMC3165096

Abstract

Prism adaptation may alleviate some symptoms of spatial neglect. However, the mechanism through which this technique works is still unclear. This study investigated whether prism adaptation differentially affects dysfunction in perceptual-attentional 'where' bias versus motor-intentional 'aiming' bias. Five neglect patients performed a line bisection task in which lines were viewed under both normal and right-left reversed viewing conditions, allowing for the fractionation of 'where' and 'aiming' spatial bias components. After two consecutive days of prism adaptation, participants demonstrated a significant improvement in 'aiming' spatial bias, with no effect on 'where' spatial bias. These findings suggest that prism adaptation may primarily affect motor-intentional 'aiming' bias in poststroke spatial neglect patients.

Language: en