Skip Navigation LinksHome > December 2008 - Volume 21 - Issue 4 > Prism Adaptation Moves Neglect-related Perseveration to Cont...
Cognitive & Behavioral Neurology:
doi: 10.1097/WNN.0b013e31818a5cc1
Case Reports

Prism Adaptation Moves Neglect-related Perseveration to Contralesional Space

Nys, Gudrun M. S. PhD*; Seurinck, Ruth PhD* †; Dijkerman, H. Chris PhD‡ §

Collapse Box


Background: Hemi-neglect is a disorder characterized by a disregard of contralesional stimuli. Some neglect patients also show an “exaggerated attention” for the ipsilesional field, reflected in perseverative responses, such as repetitive fixations in the ipsilesional field, ipsilesional revisitings on standard cancellation, or exaggerations in drawings on the ipsilesional side.

Objective and Method: It is still unclear whether neglect and perseveration are due to a single underlying mechanism. In the present study, we will examine the effect of 4-day-in-a-row prism adaptation on neglect and perseveration severity in a patient with severe perseverations. Additionally, we will examine whether the position of omissions and perseverations on the Star Cancellation will change during the intervention.

Results: Our patient showed a decrease in neglect severity and an increase in perseveration severity, suggesting that perseveration and neglect are dissociated phenomena. Interestingly, 4-day-in-a-row prism adaptation gradually moved the predominant position of perseverative responses from right to left as neglect decreased with treatment.

Conclusions: Perseverative responses do not necessarily occur in the ipsilesional sector of space as is generally assumed. Instead, the position of the revisits may be determined by the severity of the neglect, and may shift when the focus of attention moves more contralesionally with recovery.

© 2008 Lippincott Williams & Wilkins, Inc.


Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.