A transient dominance of theta ERP component characterizes passive auditory processing: evidence from a developmental study.
This study analyzed relationships among co-existent EEG frequency responses during passive auditory stimulus processing. By applying quantifiers based on wavelet entropy, it is demonstrated that a short-lasting ordering of the complex post-stimulus EEG signal occurs as a result of a transient synchronization in the theta frequency channel. Further, by using a developmental model it is shown that, independently of the frequency content of the background EEG and ERPs, a highly-ordered microstate in the ERP is always determined by theta frequency. Thus, transient dominance of synchronized theta oscillations may reflect an important functional mechanism subserving stimulus information processing.
Kolev
V
V
Institute of Physiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 23, 1113 Sofia, Bulgaria.
Rosso
O A
OA
Yordanova
J
J
D000161:Acoustic Stimulation; D000328:Adult; D000375:Aging / Q000502:physiology*; D001303:Auditory Cortex / Q000254:growth & development* / Q000502:physiology*; D001307:Auditory Perception / Q000502:physiology*; D001683:Biological Clocks / Q000502:physiology*; D002648:Child; D003344:Cortical Synchronization; D019277:Entropy; D005072:Evoked Potentials, Auditory / Q000502:physiology*; D006801:Humans; D008959:Models, Neurological; D011930:Reaction Time / Q000502:physiology; D013826:Theta Rhythm