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Updated: Aug 10, 2026
08:26
Event-related Potentials During Target-response Tasks to Study Cognitive Processes of Upper Limb Use in Children with Unilateral Cerebral Palsy
Published on: January 11, 2016
[Cognitive potential p300 in Parkinson disease]
Zhurnal Nevrologii I Psikhiatrii Imeni S.S. Korsakova
|October 21, 2003
Summary
Parkinson's disease patients without cognitive impairment show altered P300 brainwaves, indicating early cognitive changes. P300 analysis may help detect subclinical cognitive disturbances in Parkinson's disease.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Neurology
Context:
- Idiopathic Parkinson's disease (PD) affects motor function and can lead to cognitive impairment.
- Early detection of cognitive changes in PD is crucial for management.
- The P300 event-related potential is a sensitive marker of cognitive processing.
Purpose:
- To investigate P300 cognitive evoked potentials in patients with idiopathic Parkinson's disease (PD) without cognitive impairment.
- To evaluate the influence of disease-related factors on P300 characteristics.
- To determine the utility of P300 in diagnosing subclinical cognitive disturbances in PD.
Summary:
- Forty PD patients without cognitive impairment and 8 controls underwent clinical and neuropsychological evaluation.
- PD patients exhibited significantly prolonged P300 latency and decreased P300 peak amplitude compared to controls.
- P300 alterations in PD patients suggest reduced directed activity and impaired mental recognition, particularly in non-verbal processing.
Impact:
- P300 abnormalities in PD patients without dementia indicate subclinical cognitive deficits.
- P300 recording can serve as a valuable tool for diagnosing early cognitive disturbances in PD.
- Findings contribute to understanding the neurophysiological basis of cognitive changes in Parkinson's disease.
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