Evoked potentials and rhythmic afterpotentials in relation to pre-stimulus EEG activity during quiet waking state.

S. Moyanova, D. Popivanov, D. Itsev

Research output: Contribution to journalArticlepeer-review

Abstract

The relationship between the frequency-characterized EEG activity preceding the stimulus presentation and the amplitude-characterized evoked potentials (EPs) and rhythmic afterreactions (RARs) was investigated. The experiments were performed on the somatosensory cortex of cats during quiet waking state. It was found that upon one and the same parameters of stimulation the amplitude of the EPs and the RARs depended significantly on the frequency of the spontaneous EEG activity recorded one second before the stimulus. A decrease of the frequency of the on-going EEG favoured the appearance of the high-amplitude early and late components of the evoked potentials and of the rhythmic afterpotentials. Conversely, the probability of appearance of low-amplitude EPs increased and that of RARs decreased when the frequency of the on-going EEG increased.

Original languageEnglish
Pages (from-to)3-11
Number of pages9
JournalActa Physiologica et Pharmacologica Bulgarica
Volume9
Issue number1
Publication statusPublished - 1983

ASJC Scopus subject areas

  • Physiology
  • Pharmacology

Fingerprint Dive into the research topics of 'Evoked potentials and rhythmic afterpotentials in relation to pre-stimulus EEG activity during quiet waking state.'. Together they form a unique fingerprint.

Cite this