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Reliability of the task‐related component (P3b) of P3 event‐related potentials
Author(s) -
MAEDA HISAO,
MORITA KIICHIRO,
NAKAMURA JUN,
INOUE MASAYUKI,
KINOSHITA SAYAKA,
KODAMA EISUKE,
MAKI SEIKO,
NAKAZAWA YOICHIRO
Publication year - 1995
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1995.tb01902.x
Subject(s) - p3b , habituation , intraclass correlation , p3a , audiology , oddball paradigm , psychology , event related potential , latency (audio) , session (web analytics) , correlation , developmental psychology , electroencephalography , neuroscience , mathematics , medicine , psychometrics , computer science , telecommunications , geometry , world wide web
Within session and between session reliabilities of the task‐related component (P3b) of the P3 measures (amplitude, area and latency) and their habituation across eight sessions separated by 7–10 days, except for an interval of 1 month between the 6th and 7th sessions, were studied based on the difference waves, which were obtained by subtracting the ignored infrequent event‐related potentials (ERP) from the target ERP elicited by a standard auditory oddball paradigm with eyes‐open or eyes‐closed conditions in 10 normal subjects. The within session reliabilities represented as Pearson correlation coefficients ( r ) were 0.57‐0.66 for the three measures except for those for the latency and amplitude under the eyes‐closed condition. The between session reliabilities expressed as intraclass correlation coefficients ( R ) ranged from 0.54 to 0.60 except for that for latency under eyes‐closed conditions. Long‐term habituation occurred within the first six sessions for the P3b amplitude and area, and dishabituation took place in the 7th session after an interval of 1 month, whereas no such phenomenon was observed for the P3b latency. Implications of the present results are discussed in terms of the clinical application of the P3 measures.