Test-retest consistency of the event-related desynchronization/event-related synchronization of the 4-6, 6-8, 8-10 and 10-12 Hz frequency bands during a memory task
Cm. Krause et al., Test-retest consistency of the event-related desynchronization/event-related synchronization of the 4-6, 6-8, 8-10 and 10-12 Hz frequency bands during a memory task, CLIN NEU, 112(5), 2001, pp. 750-757
Objective: The aim of this study was to determine the test-retest consisten
cy of the event-related desynchronization/event-related synchronization (ER
D/ERS) method during the performance of an auditory memory task.
Methods: The EEG was recorded while 12 subjects performed an auditory memor
y task on two separate occasions (mean test-retest interval 9 days). Differ
ences in the ERD/ERS responses between the first and second registrations w
ere examined in 4 EEG frequency bands of interest: 4-6, 6-8, 8-10 and 10-12
Hz.
Results: We observed significant differences in the ERD/ERS responses betwe
en the first and second registration In all studied frequency bands when ex
amined as a function of time and experimental task. The test-retest reliabi
lity of the ERD/ERS values was highest in the theta frequency range (4-6 an
d 6-8 Hz), poorer in the 8-10 Hz and poorest in the 10-12 Hz alpha frequenc
y range.
Conclusions: The test-retest effect was seen in the ERD/ERS responses of al
l studied frequency bands during an auditory memory task. (C) 2001 Elsevier
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