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Related Experiment Videos

How lateralised is visuospatial neglect?

M Small1, A Cowey, S Ellis

  • 1MRC Research Centre in Brain and Behaviour, University Department of Clinical Neurology, Radcliffe Infirmary, Oxford, U.K.

Neuropsychologia
|April 1, 1994
PubMed
Summary
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Patients with left visuospatial neglect often show varied attention deficits, not just on the left. This inattention can include right-sided space and persists over time, impacting cancellation tasks.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Visuospatial neglect is a common deficit following cerebral infarction.
  • Understanding the precise nature of attentional deficits is crucial for effective rehabilitation.

Purpose of the Study:

  • To investigate the performance patterns of patients with left visuospatial neglect on cancellation tasks.
  • To determine if neglect is consistently left-sided or includes right-sided inattention.

Main Methods:

  • Seventeen patients with left visuospatial neglect due to cerebral infarction were assessed.
  • The Behavioural Inattention Test (BIT) subtests were administered shortly after the neurological event and at weekly follow-ups.
  • Performance on line, letter, and star cancellation tasks, including a laterally extended star cancellation, was analyzed.

Related Experiment Videos

Main Results:

  • Group mean performance showed a right-to-left decrement, but individual analysis revealed varied omission patterns.
  • Many patients exhibited significant left- and right-sided omissions on cancellation tasks.
  • These varied inattention patterns persisted over weekly follow-up intervals.

Conclusions:

  • Patients with left visuospatial neglect can present with diverse performance deficits, not solely left-sided inattention.
  • A significant number of patients, especially those with lower scores, demonstrated consistent inattention to both left and right sides of space.
  • These findings highlight the complexity of visuospatial neglect and suggest a broader spatial scope of inattention than previously assumed.