Summary
International Symposium on Nonlinear Theory and its Applications
2005
Session Number:4-1-4
Session:
Number:4-1-4-2
Difference of EEG dynamics when listening to comfortable or uncomfortable sound
Akihito Koshio, Osamu Araki,
pp.305-308
Publication Date:2005/10/18
Online ISSN:2188-5079
Summary:
In this study, we examined the difference of EEG patterns when subjects are listening to comfortable or uncomfortable sound. EEG waves were measured at four positions (FP1, FP2, P3, P4). Two kinds of sounds, which are comfortable or uncomfortable to most of us, were provided to the subjects. Consequently, we found that the shapes of the cross-correlation of FP1 and FP2 EEG waves are different. The cross-correlation in response to comfortable sound decays 250[ms] faster on average than that to uncomfortable sound, and the gradient of the crosscorrelation of comfortable sound is 53.7% larger than that of uncomfortable one. This result suggests that the speed of information transmission in the prefrontal cortex may depend on whether the emotional impression is comfortable or uncomfortable, while it does not depend on dynamical dimension or difference of frequency component.