Brain Activities Evoked by Missing Auditory Stimuli: A Combined Study Using MEG and fMRI Data
In MEG studies, cortical activities around the human auditory cortex were found to be evoked by randomly occurring infrequent stimulus changes, e.g., in tone frequency or in tone intensity, among a monotonous sequence of tones . Some studies using random stimulus omissions also found evoked ‘endogenous’ responses by the ‘missing’ stimulus itself [2, 3]. However, the location of the activities differed between the two types of studies. In this study, we employed the same ‘missing’ tone sequence in MEG and fMRI measurements and investigated the activities around the superior temporal auditory cortex.
KeywordsAuditory Stimulus Auditory Cortex Superior Temporal Sulcus Primary Auditory Cortex Tone Sequence
Unable to display preview. Download preview PDF.
- Hari, R., Joutsiniemi, S.L., Hämäläinen, M., and Vilkman, V. (1989) Neuroscience. Letter, 99:164–168Google Scholar
- Miyauchi, S., Takino, R., Sasaki, Y., Pütz, B., and Okamura, H. Missing auditory stimuli activate the primary and associate auditory cortices: a combined study MEG with fMRI, The 10th Tokyo Institute of Psychiatry International Symposium Abstract., 1995, pp.72–73Google Scholar