Neuromagnetic and neuroelectric oscillatory responses to acoustic stimulation with broadband noise

B. W. Johnson*, S. D. Muthukumaraswamy, W. C. Gaetz, D. O. Cheyne

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We investigated event-related oscillatory responses to acoustic stimulation with EEG and MEG measurements of brain function. EEG and MEG measurements were obtained from healthy adults presented with 500 ms segments of broadband noise presented to both ears via insert earphones. The results showed that auditory stimulation resulted in a reduction in beta band activity within 200 to 400 ms after stimulus onset. The magnitude of this effect was markedly larger when listeners actively attended to sounds than when they ignored them. These results support the conclusion that beta-band oscillations are directly influenced by activation of auditory cortex with acoustic stimulation. However these responses are also strongly modulated by attentional and/or motoric factors related to the auditory task.

Original languageEnglish
Pages (from-to)41-44
Number of pages4
JournalInternational Congress Series
Volume1300
DOIs
Publication statusPublished - Jun 2007
Externally publishedYes

Keywords

  • Auditory evoked potential
  • Auditory perception
  • Brain mapping
  • EEG
  • MEG
  • Pitch perception
  • Sound localization

Fingerprint

Dive into the research topics of 'Neuromagnetic and neuroelectric oscillatory responses to acoustic stimulation with broadband noise'. Together they form a unique fingerprint.

Cite this