Slow brain potentials in a visual-spatial memory task: Topographic distribution and inter-laboratory consistency

John W. Rohrbaugh, Douglas N. Dunham, Paula A. Stewart, Lance O. Bauer, Samuel Kuperman, Sean O'Connor, Bernice Porjesz, Henri Begleiter

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Slow brain electrical potentials (SPs) were investigated in a visual-spatialmemory task. Two issues were addressed: (1) the nature and topographic distribution of the potentials obtained under such conditions; and (2) the consistency of the SPs when recorded in six identically configured laboratories. Fifteen young male subjects were studied at each laboratory (total n = 90). The paradigm entailed presentations of paired visual patterns (S1 and S2), to which subjects responded with a choice reaction time response indicating whether or not the two patterns matched. A biphasic contingent negative variation (CNV) was produced which consisted of an early symmetric component with bilateral foci at posterior temporal sites and a subsequent mid-parietal dominant wave later in the retention interval. Although the CNVs from all laboratories were similar in waveform and in topographic distribution, there were significant inter-laboratory differences in amplitude of the slow potential components. The topographic distributions of the components and the possible role of sampling effects are discussed.

Original languageEnglish
Pages (from-to)111-122
Number of pages12
JournalInternational Journal of Psychophysiology
Volume25
Issue number2
DOIs
StatePublished - Feb 1997

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Brain
Contingent Negative Variation
Reaction Time
Spatial Memory
Retention (Psychology)

Keywords

  • Contingent negative variation
  • Inter-laboratory consistency
  • Slow potentials
  • Visual-spatial memory

ASJC Scopus subject areas

  • Behavioral Neuroscience

Cite this

Slow brain potentials in a visual-spatial memory task : Topographic distribution and inter-laboratory consistency. / Rohrbaugh, John W.; Dunham, Douglas N.; Stewart, Paula A.; Bauer, Lance O.; Kuperman, Samuel; O'Connor, Sean; Porjesz, Bernice; Begleiter, Henri.

In: International Journal of Psychophysiology, Vol. 25, No. 2, 02.1997, p. 111-122.

Research output: Contribution to journalArticle

Rohrbaugh, John W. ; Dunham, Douglas N. ; Stewart, Paula A. ; Bauer, Lance O. ; Kuperman, Samuel ; O'Connor, Sean ; Porjesz, Bernice ; Begleiter, Henri. / Slow brain potentials in a visual-spatial memory task : Topographic distribution and inter-laboratory consistency. In: International Journal of Psychophysiology. 1997 ; Vol. 25, No. 2. pp. 111-122.
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