Integrity of medial temporal structures may predict better improvement of spatial neglect with prism adaptation treatment

Prism adaptation treatment of neglect: conflicting results?

In this issue of Neurology, two articles consider the treatment of neglect with prisms and initially appear to have contradictory results. 1,2 Neglect due to right hemisphere injury, most commonly after stroke, continues to be a major cause of disability, impairing ability to live independently and perform activities of daily living. Patients with strokes that damage the right hemisphere are mo...

Ineffectiveness of prism adaptation on spatial neglect signs.

BACKGROUND AND PURPOSE To evaluate the effect of prism adaptation (PA) on spatial neglect signs. METHODS Ten patients (hemianopia in 6) and 8 control subjects were included. Tasks were reading single words, nonwords, and a text, bell cancellation, line bisection, and scene drawing, before and after adaptation, with either deviating or neutral prisms. RESULTS Errors were more frequent in pat...

Prism Adaptation: A Rehabilitation Technique for Spatial Neglect

Prism adaptation improves representational neglect.

Previous work has shown that various symptoms of unilateral neglect, including the pathological shift of the subjective midline to the right, may be improved by a short adaptation period to a prismatic shift of the visual field to the right. We report here, in two neglect patients the improvement of imagery neglect after prism exposure. Despite a strong neglect observed for mental images, as we...

Prism adaptation and 1 Running head: PRISM ADAPTATION AND NEGLECT Prism Adaptation and Hemispatial Neglect: Notes Toward Understanding

Theory and data from normal prism adaptation are applied toward understanding the ameliorating effects of prism adaptation for left hemispatial neglect patients. The composite nature of the egocentric (noetic) reference frame suggests that the therapeutic value of prism adaptation might be enhanced if a prism adaptation task were selected that produces spatial realignment in the patient’s dysfu...