Authors
Inga Griskova-Bulanova, Osvaldas Ruksenas, Kastytis Dapsys, Valentinas Maciulis, Sidse MH Arnfred
Publication date
2011/8/1
Journal
Clinical Neurophysiology
Volume
122
Issue
8
Pages
1541-1548
Publisher
Elsevier
Description
OBJECTIVE
To explore the modulation of auditory steady-state response (ASSR) by experimental tasks, differing in attentional focus and arousal level.
METHODS
20Hz and 40Hz click trains were used to elicit ASSRs. Experiment 1 consisted of two runs of closed eyes and two runs of open eyes. Experiment 2 consisted of six tasks: counting 20Hz and 40Hz stimuli, sitting with closed and open eyes, reading an article, and performing a search task. Phase locking factor, evoked amplitude and total intensity were decomposed by non-negative multi-way factorization.
RESULTS
The total intensity of 40Hz ASSR was enhanced during closed eyes condition in comparison to the open eyes condition. The evoked amplitude and phase locking factor of 40Hz ASSR were attenuated during distraction, while there were no differences between attention to stimulation and no task. 20Hz ASSR and 20Hz ASSR-related 40Hz …
Scholar articles
I Griskova-Bulanova, O Ruksenas, K Dapsys… - Clinical Neurophysiology, 2011