Symptomatic and asymptomatic high-grade unilateral internal carotid artery stenosis: scalp topography of event-related potentials (P300) and psychometric testing

Electroencephalography and Clinical Neurophysiology
A Taghavy, H Hamer

Abstract

Unilateral internal carotid artery (ICA) stenosis may be accompanied by widespread atherosclerosis of extra- and intracranial vessels leading to subtle cognitive disorders. We applied multichannel recording of P300 in 28 patients (68.3 +/- 8.1 years; 15 asymptomatic, 13 with a history of transient ischemic attack (TIA)) and compared them with an age- and sex-matched control group. All underwent a visual "odd-ball paradigm" as well as a psychometric test, the Cognitive Performance Test (CPT), testing mainly visual attention and memory. The potentials were derived from 16 electrodes according to the 10/20 system against linked mastoids. The latencies and amplitudes of N250 and P300 were measured and their amplitudes additionally mapped. Furthermore, the early sensory exogenous potentials, P1 and N1, within the P300 potentials as well as conventional pattern reversal visual evoked potentials (PVEPs) were evaluated. (1) Both the early exogenous potentials and the conventional PVEPs showed no significant differences among all groups. (2) There were no significant differences between asymptomatic patients and those with a TIA history in all parameters of the P300 complex so that one total patient group was constructed and compared to...Continue Reading

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Citations

Mar 11, 2000·The European Journal of Neuroscience·C HeimK H Sontag
Dec 4, 2014·Clinical EEG and Neuroscience·Fu-Jung HsiaoYung-Yang Lin
Jul 11, 1998·International Journal of Geriatric Psychiatry·R Rao, R Howard
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