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Related Concept Videos

Lateralization01:28

Lateralization

Brain lateralization refers to the division of mental processes and functions between the two hemispheres of the brain, a phenomenon that optimizes neural efficiency and underpins complex abilities in humans. This specialization allows each hemisphere to perform tasks where it has a comparative advantage, facilitating more refined cognitive capabilities across different domains.

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Related Experiment Video

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Virtual Reality Tools for Assessing Unilateral Spatial Neglect: A Novel Opportunity for Data Collection
07:04

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Published on: March 10, 2021

Sensitivity of clinical and behavioural tests of spatial neglect after right hemisphere stroke.

P Azouvi1, C Samuel, A Louis-Dreyfus

  • 1Service de Rééducation Neurologique, Formation de Recherche Claude Bernard and Université René Descartes, Hôpital Raymond Poincaré, Garches, France. philippe.azouvi@rpc.ap-hop-paris.fr

Journal of Neurology, Neurosurgery, and Psychiatry
|July 18, 2002
PubMed
Summary
This summary is machine-generated.

Assessing spatial neglect after stroke is crucial. Behavioral assessment in daily life proved more sensitive than paper-and-pencil tests for detecting this common neurological disorder.

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Area of Science:

  • Neuroscience
  • Neurology
  • Rehabilitation Medicine

Background:

  • Variability in reported rates of spatial neglect after stroke stems from inconsistent assessment methods.
  • Spatial neglect is a common and disabling consequence of stroke, impacting daily functioning.
  • Standardized and sensitive methods are needed to accurately diagnose and characterize spatial neglect.

Purpose of the Study:

  • To evaluate the sensitivity of various tests for assessing spatial neglect following right hemisphere stroke.
  • To compare the diagnostic power of different neglect assessment tools, including behavioral and paper-and-pencil measures.
  • To investigate the heterogeneity of spatial neglect and its relationship with brain lesion location.

Main Methods:

  • A cohort of 206 subacute right hemisphere stroke patients underwent a comprehensive test battery.
  • Tests included assessments for anosognosia, visual extinction, gaze orientation, personal neglect, and peripersonal spatial neglect (paper-and-pencil).
  • A subgroup (n=69) received behavioral assessment of neglect in daily life situations; patients were compared to controls.

Main Results:

  • The cancellation task's starting point was the most sensitive paper-and-pencil measure.
  • Approximately 85% of patients exhibited some degree of neglect across all measures.
  • Behavioral assessment in daily life was significantly more sensitive than any single paper-and-pencil test, identifying moderate to severe neglect in 36% of cases.

Conclusions:

  • The automatic rightward orientation bias is the most sensitive clinical measure for neglect.
  • Behavioral assessment in daily life surpasses individual paper-and-pencil tests in sensitivity for detecting spatial neglect.
  • Findings support the concept of spatial neglect as a heterogeneous disorder with dissociations between different neglect subtypes.