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Prism adaptation moves neglect-related perseveration to contralesional space

Gudrun Nys (UGent) , Ruth Seurinck (UGent) and Chris Dijkerman
Author
Organization
Abstract
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 oil 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 ail 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.
Keywords
OMISSIONS, CANCELLATION, UNILATERAL NEGLECT, RESPONSES, neglect, perseveration, prism adaptation, recovery, STROKE, STIMULI, SEARCH, BEHAVIOR

Citation

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Chicago
Nys, Gudrun, Ruth Seurinck, and Chris Dijkerman. 2008. “Prism Adaptation Moves Neglect-related Perseveration to Contralesional Space.” Cognitive and Behavioral Neurology 21 (4): 249–253.
APA
Nys, G., Seurinck, R., & Dijkerman, C. (2008). Prism adaptation moves neglect-related perseveration to contralesional space. COGNITIVE AND BEHAVIORAL NEUROLOGY, 21(4), 249–253.
Vancouver
1.
Nys G, Seurinck R, Dijkerman C. Prism adaptation moves neglect-related perseveration to contralesional space. COGNITIVE AND BEHAVIORAL NEUROLOGY. 2008;21(4):249–53.
MLA
Nys, Gudrun, Ruth Seurinck, and Chris Dijkerman. “Prism Adaptation Moves Neglect-related Perseveration to Contralesional Space.” COGNITIVE AND BEHAVIORAL NEUROLOGY 21.4 (2008): 249–253. Print.
@article{535724,
  abstract     = {Background: Hemi-neglect is a disorder characterized by a disregard of contralesional Stimuli. Some neglect patients also show an {\textacutedbl}exaggerated attention{\textacutedbl} 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 oil 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 ail 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.},
  author       = {Nys, Gudrun and Seurinck, Ruth and Dijkerman, Chris},
  issn         = {1543-3633},
  journal      = {COGNITIVE AND BEHAVIORAL NEUROLOGY},
  keyword      = {OMISSIONS,CANCELLATION,UNILATERAL NEGLECT,RESPONSES,neglect,perseveration,prism adaptation,recovery,STROKE,STIMULI,SEARCH,BEHAVIOR},
  language     = {eng},
  number       = {4},
  pages        = {249--253},
  title        = {Prism adaptation moves neglect-related perseveration to contralesional space},
  url          = {http://dx.doi.org/10.1097/WNN.0b013e31818a5cc1},
  volume       = {21},
  year         = {2008},
}

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