PMID: 9161893Jul 1, 1997Paper

Event-related potentials in parkinsonian patients under auditory discrimination tasks

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
D PhilipovaD Georgiev

Abstract

Seventeen non-demented idiopathic medicated Parkinsonian patients and 17 age- and education-matched controls participated in auditory discrimination tasks. The study aimed at revealing the differences in their ability for auditory information processing. Series comprising 1000 Hz and 800 Hz tones were used as stimuli. The accuracy in the tones' discrimination was determined by means of counting the high tone or recording a binary sensomotor reaction. The results based on the mean group values of event-related potential components show that the Parkinsonian patients had lower amplitude for the exogenous N1 and endogenous P3 components of the evoked responses. In the sensomotor task series the patients had longer N2 latency than controls. In the counting series the patients recognized the tones well and gave an exact count but during the sensomotor task they had longer reaction time, more erroneous answers and depressed P3. The data show differences in the information processing between the two groups and reveal cognitive impairment in the Parkinsonian patients.

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Citations

Sep 29, 2000·Movement Disorders : Official Journal of the Movement Disorder Society·A HozumiK Yamazaki
May 31, 2006·Experimental Brain Research·Matthias MaschkeJürgen Konczak
Mar 18, 2009·Cellular and Molecular Neurobiology·Juliana DushanovaGloria Nikolova
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Mar 4, 1999·Journal of the Neurological Sciences·C Robertson, J Empson
Aug 9, 2016·Neuroscience and Biobehavioral Reviews·Caroline SeerBruno Kopp
Jun 30, 2006·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Ulla EllfolkChristina M Krause
Jun 25, 2003·Brain : a Journal of Neurology·Matthias MaschkeJürgen Konczak
Aug 9, 2020·Frontiers in Neurology·Evelien De GrooteMiet De Letter

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