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Related Experiment Video

Updated: May 30, 2026

Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with Unilateral Cerebral Palsy
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Published on: January 11, 2016

P300 in neglect.

Styrmir Saevarsson1, Arni Kristjánsson, Michael Bach

  • 1Department of Neuropsychology, Institute of Psychology, University of Freiburg, Engelbergstr. 41, 79085 Freiburg, Germany. a.a.wijers@rug.nl

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
|August 16, 2011
PubMed
Summary
This summary is machine-generated.

Hemispatial neglect involves attentional deficits. The P300 brainwave component reveals that attention allocation is impaired in neglect patients, varying with stimulus awareness.

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Last Updated: May 30, 2026

Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with Unilateral Cerebral Palsy
08:26

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Published on: January 11, 2016

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07:37

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Published on: August 1, 2017

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Neurology

Background:

  • Hemispatial neglect is often attributed to attentional deficits.
  • The P300 event-related potential component is a key indicator of attention allocation.

Purpose of the Study:

  • To investigate attentional deficits in hemispatial neglect using the P300.
  • To examine the relationship between P300, stimulus processing, and neglect severity.

Main Methods:

  • Recorded P300 and oddball detection performance in patients with neglect.
  • Presented infrequent targets in contralesional (affected) and ipsilesional (unaffected) visual hemifields.

Main Results:

  • P300 responses were weaker for contralesional targets compared to ipsilesional targets.
  • In the affected hemifield, P300 amplitude differences correlated with target identification accuracy.
  • Missed contralesional targets correlated with longer completion times on standard neglect tests.

Conclusions:

  • The P300 reflects general attentional impairment in neglect.
  • P300 responses are modulated by individual stimulus awareness in neglect patients.
  • Findings highlight the link between attention dysfunction and stimulus processing deficits in neglect and extinction.