Journal article
Slow brain potentials in a visual-spatial memory task: topographic distribution and inter-laboratory consistency
International journal of psychophysiology, Vol.25(2), pp.111-122
1997
DOI: 10.1016/S0167-8760(96)00714-3
PMID: 9101336
Abstract
Slow brain electrical potentials (SPs) were investigated in a visual-spatial memory 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.
© 1997 Elsevier Science B.V.
Details
- Title: Subtitle
- Slow brain potentials in a visual-spatial memory task: topographic distribution and inter-laboratory consistency
- Creators
- John W Rohrbaugh - Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USADouglas N Dunham - Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USAPaula A Stewart - Department of Psychiatry, Washington University School of Medicine, St. Louis, MO 63110, USALance O Bauer - Department of Psychiatry, University of Connecticut Health Center, Farmington, CT 06030, USASamuel Kuperman - Department of Psychiatry, University of Iowa, Iowa City, IA 52242, USASean J O'Connor - Department of Psychiatry, Indiana University and VAMC Indianapolis, IN 46202, USABernice Porjesz - Department of Psychiatry, State University of New York Health Sciences Center, Brooklyn, NY 11203, USAHenri Begleiter - Department of Psychiatry, State University of New York Health Sciences Center, Brooklyn, NY 11203, USA
- Resource Type
- Journal article
- Publication Details
- International journal of psychophysiology, Vol.25(2), pp.111-122
- Publisher
- Elsevier B.V
- DOI
- 10.1016/S0167-8760(96)00714-3
- PMID
- 9101336
- ISSN
- 0167-8760
- eISSN
- 1872-7697
- Language
- English
- Date published
- 1997
- Academic Unit
- Psychiatry; Stead Family Department of Pediatrics
- Record Identifier
- 9984003915002771
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