An investigation of the event-related slow-wave potential (0.01-2 Hz) in normal children

Citation
Sj. Johnstone et Rj. Barry, An investigation of the event-related slow-wave potential (0.01-2 Hz) in normal children, INT J PSYCP, 32(1), 1999, pp. 15-34
Citations number
51
Categorie Soggetti
Psycology,"Neurosciences & Behavoir
Journal title
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
ISSN journal
01678760 → ACNP
Volume
32
Issue
1
Year of publication
1999
Pages
15 - 34
Database
ISI
SICI code
0167-8760(199904)32:1<15:AIOTES>2.0.ZU;2-R
Abstract
Previous research has indicated that the auditory ERPs of children are domi nated by a frontal negative slow-wave. This paper outlines a preliminary at tempt to separate event-related low-frequency activity from traditional ERP components as found in older subjects. An active auditory oddball task was completed by 30 normal children aged from 8 to 18 years, and ERPs to targe t and standard stimuli were derived. The original ERP files were digitally filtered to calculate separate ERPs containing only 0.01-2 Hz activity (ter med the SW-ERP) or 2-12 Hz activity (termed the RESIDUAL ERP) for each subj ect. The SW-ERP was maximally correlated with the slow-wave factor from a p rincipal components analysis of the original target and standard waveforms. The SW-ERPs to target stimuli contained an early negative component which showed an age-related decrease, and a late positive component which did not . The SW-ERP was found to be partly responsible for the differences in comp onent amplitude and morphology between sites observed in the raw ERPs. (C) 1999 Elsevier Science B.V. Al rights reserved.