Abstract:
:Frequency-modulated sounds play an important role in our daily social life. However, it currently remains unclear whether frequency modulation rates affect neural activity in the human auditory cortex. In the present study, using magnetoencephalography, we investigated the auditory evoked N1m and sustained field responses elicited by temporally repeated and superimposed frequency-modulated sweeps that were matched in the spectral domain, but differed in frequency modulation rates (1, 4, 16, and 64 octaves per sec). The results obtained demonstrated that the higher rate frequency-modulated sweeps elicited the smaller N1m and the larger sustained field responses. Frequency modulation rate had a significant impact on the human brain responses, thereby providing a key for disentangling a series of natural frequency-modulated sounds such as speech and music.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Okamoto H,Kakigi Rdoi
10.1038/srep18143subject
Has Abstractpub_date
2015-12-14 00:00:00pages
18143issn
2045-2322pii
srep18143journal_volume
5pub_type
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