MEG correlates of categorical perception of a voice onset time continuum in humans

Panagiotis G. Simos; Randy L. Diehl; Joshua I. Breier; Michelle R. Molis; George Zouridakis; Andrew C. Papanicolaou

doi:10.1016/S0926-6410(98)00037-8

MEG correlates of categorical perception of a voice onset time continuum in humans

Panagiotis G. Simos, Randy L. Diehl, Joshua I. Breier, Michelle R. Molis, George Zouridakis, Andrew C. Papanicolaou

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

Event-related magnetic fields (ERFs) were recorded from the left hemisphere in nine normal volunteers in response to four consonant-vowel (CV) syllables varying in voice-onset time (VOT). CVs with VOT values of 0 and +20 ms were perceived as /ga/ and those with VOT values of +40 and +60 ms as /ka/. Results showed: (1) a displacement of the N1m peak equivalent current dipole toward more medial locations; and (2) an abrupt reduction in peak magnetic flux strength, as VOT values increased from +20 to +40 ms. No systematic differences were noted between the 0 and +20 ms stimuli or between the +40 and +60 ms CVs. The findings are in agreement with the results of multiunit invasive recordings in non-human primates regarding the spatial and temporal pattern of neuronal population responses in the human auditory cortex which could serve as neural cues for the perception of voicing contrasts.

Original language	English (US)
Pages (from-to)	215-219
Number of pages	5
Journal	Cognitive Brain Research
Volume	7
Issue number	2
DOIs	https://doi.org/10.1016/S0926-6410(98)00037-8
State	Published - Oct 1998
Externally published	Yes

Keywords

Auditory cortex
Human
Magnetoencephalography
N1m
Speech
VOT
Voicing

ASJC Scopus subject areas

Experimental and Cognitive Psychology
Cognitive Neuroscience
Behavioral Neuroscience

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10.1016/S0926-6410(98)00037-8

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title = "MEG correlates of categorical perception of a voice onset time continuum in humans",

abstract = "Event-related magnetic fields (ERFs) were recorded from the left hemisphere in nine normal volunteers in response to four consonant-vowel (CV) syllables varying in voice-onset time (VOT). CVs with VOT values of 0 and +20 ms were perceived as /ga/ and those with VOT values of +40 and +60 ms as /ka/. Results showed: (1) a displacement of the N1m peak equivalent current dipole toward more medial locations; and (2) an abrupt reduction in peak magnetic flux strength, as VOT values increased from +20 to +40 ms. No systematic differences were noted between the 0 and +20 ms stimuli or between the +40 and +60 ms CVs. The findings are in agreement with the results of multiunit invasive recordings in non-human primates regarding the spatial and temporal pattern of neuronal population responses in the human auditory cortex which could serve as neural cues for the perception of voicing contrasts.",

keywords = "Auditory cortex, Human, Magnetoencephalography, N1m, Speech, VOT, Voicing",

author = "Simos, {Panagiotis G.} and Diehl, {Randy L.} and Breier, {Joshua I.} and Molis, {Michelle R.} and George Zouridakis and Papanicolaou, {Andrew C.}",

year = "1998",

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doi = "10.1016/S0926-6410(98)00037-8",

language = "English (US)",

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AU - Simos, Panagiotis G.

AU - Diehl, Randy L.

AU - Breier, Joshua I.

AU - Molis, Michelle R.

AU - Zouridakis, George

AU - Papanicolaou, Andrew C.

PY - 1998/10

Y1 - 1998/10

N2 - Event-related magnetic fields (ERFs) were recorded from the left hemisphere in nine normal volunteers in response to four consonant-vowel (CV) syllables varying in voice-onset time (VOT). CVs with VOT values of 0 and +20 ms were perceived as /ga/ and those with VOT values of +40 and +60 ms as /ka/. Results showed: (1) a displacement of the N1m peak equivalent current dipole toward more medial locations; and (2) an abrupt reduction in peak magnetic flux strength, as VOT values increased from +20 to +40 ms. No systematic differences were noted between the 0 and +20 ms stimuli or between the +40 and +60 ms CVs. The findings are in agreement with the results of multiunit invasive recordings in non-human primates regarding the spatial and temporal pattern of neuronal population responses in the human auditory cortex which could serve as neural cues for the perception of voicing contrasts.

AB - Event-related magnetic fields (ERFs) were recorded from the left hemisphere in nine normal volunteers in response to four consonant-vowel (CV) syllables varying in voice-onset time (VOT). CVs with VOT values of 0 and +20 ms were perceived as /ga/ and those with VOT values of +40 and +60 ms as /ka/. Results showed: (1) a displacement of the N1m peak equivalent current dipole toward more medial locations; and (2) an abrupt reduction in peak magnetic flux strength, as VOT values increased from +20 to +40 ms. No systematic differences were noted between the 0 and +20 ms stimuli or between the +40 and +60 ms CVs. The findings are in agreement with the results of multiunit invasive recordings in non-human primates regarding the spatial and temporal pattern of neuronal population responses in the human auditory cortex which could serve as neural cues for the perception of voicing contrasts.

KW - Auditory cortex

KW - Human

KW - Magnetoencephalography

KW - N1m

KW - Speech

KW - VOT

KW - Voicing

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ER -

MEG correlates of categorical perception of a voice onset time continuum in humans

Abstract

Keywords

ASJC Scopus subject areas

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