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A 7T fMRI study investigating the influence of oscillatory phase on syllable representations

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@article{2e225d4ae08545739d3dcbb7277a978d,
title = "A 7T fMRI study investigating the influence of oscillatory phase on syllable representations",
abstract = "Stimulus categorization is influenced by oscillations in the brain. For example, we have shown that ongoing oscillatory phase biases identification of an ambiguous syllable that can either be perceived as /da/ or /ga/. This suggests that phase is a cue for the brain to determine syllable identity and this cue could be an element of the representation of these syllables. If so, brain activation patterns for /da/ should be more unique when the syllable is presented at the /da/ biasing (i.e. its {"}preferred{"}) phase. To test this hypothesis we presented non-ambiguous /da/ and /ga/ syllables at either their preferred or non-preferred phase (using sensory entrainment) while measuring 7T fMRI. Using multivariate pattern analysis in auditory regions we show that syllable decoding performance is higher when syllables are presented at their preferred compared to their non-preferred phase. These results suggest that phase information increases the distinctiveness of /da/ and /ga/ brain activation patterns.",
keywords = "Language, Oscillations, Phase, fMRI, Temporal statistics, ECHO-PLANAR IMAGES, AUDITORY-CORTEX, NEURONAL OSCILLATIONS, ACOUSTIC NOISE, ACQUISITIONS, INFORMATION, PERCEPTION, MECHANISM, SPEAKER, SOUNDS",
author = "{Ten Oever}, S and L Hausfeld and Correia, {J M} and {Van Atteveldt}, N and E Formisano and Sack, {A T}",
note = "Copyright {\circledC} 2016. Published by Elsevier Inc.",
year = "2016",
month = "11",
doi = "10.1016/j.neuroimage.2016.07.011",
language = "English",
volume = "141",
pages = "1--9",
journal = "Neuroimage",
issn = "1053-8119",
publisher = "Elsevier Science",

}

RIS

TY - JOUR

T1 - A 7T fMRI study investigating the influence of oscillatory phase on syllable representations

AU - Ten Oever, S

AU - Hausfeld, L

AU - Correia, J M

AU - Van Atteveldt, N

AU - Formisano, E

AU - Sack, A T

N1 - Copyright © 2016. Published by Elsevier Inc.

PY - 2016/11

Y1 - 2016/11

N2 - Stimulus categorization is influenced by oscillations in the brain. For example, we have shown that ongoing oscillatory phase biases identification of an ambiguous syllable that can either be perceived as /da/ or /ga/. This suggests that phase is a cue for the brain to determine syllable identity and this cue could be an element of the representation of these syllables. If so, brain activation patterns for /da/ should be more unique when the syllable is presented at the /da/ biasing (i.e. its "preferred") phase. To test this hypothesis we presented non-ambiguous /da/ and /ga/ syllables at either their preferred or non-preferred phase (using sensory entrainment) while measuring 7T fMRI. Using multivariate pattern analysis in auditory regions we show that syllable decoding performance is higher when syllables are presented at their preferred compared to their non-preferred phase. These results suggest that phase information increases the distinctiveness of /da/ and /ga/ brain activation patterns.

AB - Stimulus categorization is influenced by oscillations in the brain. For example, we have shown that ongoing oscillatory phase biases identification of an ambiguous syllable that can either be perceived as /da/ or /ga/. This suggests that phase is a cue for the brain to determine syllable identity and this cue could be an element of the representation of these syllables. If so, brain activation patterns for /da/ should be more unique when the syllable is presented at the /da/ biasing (i.e. its "preferred") phase. To test this hypothesis we presented non-ambiguous /da/ and /ga/ syllables at either their preferred or non-preferred phase (using sensory entrainment) while measuring 7T fMRI. Using multivariate pattern analysis in auditory regions we show that syllable decoding performance is higher when syllables are presented at their preferred compared to their non-preferred phase. These results suggest that phase information increases the distinctiveness of /da/ and /ga/ brain activation patterns.

KW - Language

KW - Oscillations

KW - Phase

KW - fMRI

KW - Temporal statistics

KW - ECHO-PLANAR IMAGES

KW - AUDITORY-CORTEX

KW - NEURONAL OSCILLATIONS

KW - ACOUSTIC NOISE

KW - ACQUISITIONS

KW - INFORMATION

KW - PERCEPTION

KW - MECHANISM

KW - SPEAKER

KW - SOUNDS

U2 - 10.1016/j.neuroimage.2016.07.011

DO - 10.1016/j.neuroimage.2016.07.011

M3 - Article

VL - 141

SP - 1

EP - 9

JO - Neuroimage

T2 - Neuroimage

JF - Neuroimage

SN - 1053-8119

ER -