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Oscillatory phase tracking of acoustic signal: Inter-trial phase locking response as a sensitive measure

Huizhen Tang1, 2*, Jon Brock1, 2, Katherine Demuth2, 3, Stephen Crain2, 3 and Blake W. Johnson1, 2*
  • 1 Macquarie University, Department of Cognitive Science, Australia
  • 2 ARC Centre of Excellence in Cognition and its Disorders, Australia
  • 3 Macquarie University, Department of Linguistics, Australia

A sensitive measure was developed in this study to examine how the brain responds to different amplitude-modulated rates of acoustic stimuli. We recorded magnetic brain responses to sweeps of amplitude-modulated broadband noise using MEG. By conducting inter-trial phase locking analysis (ITPL), we found cortical responses through a frequency range of 2 to 80 Hz. We conclude that ITPL can be used as a sensitive measure of human brain oscillatory responses to acoustic stimuli.

Keywords: Inter-trial phase locking, phase tracking, Auditory Cortex, brain oscillations, MEG

Conference: ACNS-2012 Australasian Cognitive Neuroscience Conference, Brisbane, Australia, 29 Nov - 2 Dec, 2012.

Presentation Type: Poster Presentation

Topic: Language

Citation: Tang H, Brock J, Demuth K, Crain S and Johnson BW (2012). Oscillatory phase tracking of acoustic signal: Inter-trial phase locking response as a sensitive measure. Conference Abstract: ACNS-2012 Australasian Cognitive Neuroscience Conference. doi: 10.3389/conf.fnhum.2012.208.00174

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Received: 25 Oct 2012; Published Online: 17 Nov 2012.

* Correspondence:
Ms. Huizhen Tang, Macquarie University, Department of Cognitive Science, Sydney, NSW, 2113, Australia, joann.tang@mq.edu.au
Dr. Blake W Johnson, ARC Centre of Excellence in Cognition and its Disorders, Sydney, NSW, 2113, Australia, blake.johnson@mq.edu.au