Recording human evoked potentials that follow the pitch contour of a natural vowel

We investigated whether pitch-synchronous neural activity could be recorded in humans, with a natural vowel and a vowel in which the fundamental frequency was suppressed. Small variations of speech periodicity were detected in the evoked responses using a fine structure spectrograph (FSS). A signifi...

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Bibliographic Details
Published in:IEEE transactions on biomedical engineering 2005-09, Vol.52 (9), p.1614-1618
Main Authors: Dajani, H.R., Purcell, D., Wong, W., Kunov, H., Picton, T.W.
Format: Article
Language:English
Subjects:
Acoustic measurements
Acoustic signal detection
Adult
Aged
Algorithms
Audiometry, Evoked Response - methods
Auditory system
Bioelectric potentials
Biomedical engineering
Biomedical measurements
biomedical signal processing
Diagnosis, Computer-Assisted - methods
Ear
Electroencephalography - methods
Evoked Potentials, Auditory - physiology
Frequency selective surfaces
Humans
Middle Aged
Natural Language Processing
Pitch Perception - physiology
Semantics
Speech
Speech Perception - physiology
speech processing
Testing
time-frequency analysis
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Summary:We investigated whether pitch-synchronous neural activity could be recorded in humans, with a natural vowel and a vowel in which the fundamental frequency was suppressed. Small variations of speech periodicity were detected in the evoked responses using a fine structure spectrograph (FSS). A significant response (P/spl Lt/0.001) was measured in all seven normal subjects even when the fundamental frequency was suppressed, and it very accurately tracked the acoustic pitch contour (normalized mean absolute error
ISSN:0018-9294
1558-2531
DOI:10.1109/TBME.2005.851499