Can our brain distinguish two kinds of inaudible sounds?

DOI

Bibliographic Information

Other Title
  • 非可聴領域の周波数を含む音を脳は区別できるのか？

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Description

<p>Mismatch negativity (MMN) is one of the auditory event-related potentials (ERP) that does not depend on the subject's attention or consciousness. In this study, we attempted to measure MMN using inaudible sounds.The subjects were 7 healthy subjects. The subject was seated at rest and instructed to read a book during the experiment. EEG was measured at 5 channels based on the 10-20 system. The target and non-target stimulus was 25 kHz and 30 kHz, respectively. The total number of stimuli was 800 times (interval: 500 ms, duration: 100 ms, probability: 8:2, right ear). MMN was derived by subtracting the ERP in the deviant stimuli from the ERP in the standard stimuli. The averaged MMN across the subjects was elicited at about 201 ms and exhibited the strongest negative intensity in fronto-central scalp areas of a topographic map. And these features resembled those of standard MMNs evoked by audible sounds.</p>

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Details 詳細情報について

  • CRID
    1390285300180968192
  • NII Article ID
    130007885027
  • DOI
    10.11239/jsmbe.annual58.324
  • ISSN
    18814379
    1347443X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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