Principal component analysis reveals differential attentional modulation of the vocal response to pitch perturbation

Shuntaro Okazaki, Koichi Mori, Minae Okada

Research output: Contribution to journalArticle

Abstract

The auditory-vocal system modifies voice fundamental frequency (F0) with auditory feedback. The responses to F0 changes in auditory feedback are known to depend on the task. The hypothesis explored in this study is that the task dependency is the result of multiple components of the F0 responses differently modulated with different tasks. Attention to audition was manipulated by task condition by the instruction to ignore or to count the number of the F0 shifts heard during vocalization. A synthetic voice with pitch shifts was used as auditory pseudo-feedback. The upward and downward shifts evoked very similar vocal F0 response patterns with polarity reversal. Attention to the auditory feedback caused a reduction in the grand-average response amplitude. By decomposing the F0 responses with principal component analysis (PCA), three principal components (PCs) with different peak latencies were found to have contributions above the criterion of 5%, totaling to 74%. All three PCs contributed to a compensatory response under the "ignore" condition. The slowest PC changed its polarity and the intermediate PC was reduced to almost zero under the "count" condition. Thus, the task-dependency of the F0 response to auditory feedback can be described in terms of different sensitivities of components to attention.

Original languageEnglish
Pages (from-to)334-340
Number of pages7
JournalJournal of the Acoustical Society of America
Volume136
Issue number1
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

principal components analysis
Principal Component Analysis
modulation
perturbation
shift
polarity
Hearing
Modulation
education
Principal Components
Auditory Feedback
sensitivity
Dependency (Psychology)

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)
  • Medicine(all)

Cite this

Principal component analysis reveals differential attentional modulation of the vocal response to pitch perturbation. / Okazaki, Shuntaro; Mori, Koichi; Okada, Minae.

In: Journal of the Acoustical Society of America, Vol. 136, No. 1, 2014, p. 334-340.

Research output: Contribution to journalArticle

@article{7bfc63cc3b6e40c589131b3319d58f56,
title = "Principal component analysis reveals differential attentional modulation of the vocal response to pitch perturbation",
abstract = "The auditory-vocal system modifies voice fundamental frequency (F0) with auditory feedback. The responses to F0 changes in auditory feedback are known to depend on the task. The hypothesis explored in this study is that the task dependency is the result of multiple components of the F0 responses differently modulated with different tasks. Attention to audition was manipulated by task condition by the instruction to ignore or to count the number of the F0 shifts heard during vocalization. A synthetic voice with pitch shifts was used as auditory pseudo-feedback. The upward and downward shifts evoked very similar vocal F0 response patterns with polarity reversal. Attention to the auditory feedback caused a reduction in the grand-average response amplitude. By decomposing the F0 responses with principal component analysis (PCA), three principal components (PCs) with different peak latencies were found to have contributions above the criterion of 5{\%}, totaling to 74{\%}. All three PCs contributed to a compensatory response under the {"}ignore{"} condition. The slowest PC changed its polarity and the intermediate PC was reduced to almost zero under the {"}count{"} condition. Thus, the task-dependency of the F0 response to auditory feedback can be described in terms of different sensitivities of components to attention.",
author = "Shuntaro Okazaki and Koichi Mori and Minae Okada",
year = "2014",
doi = "10.1121/1.4881921",
language = "English",
volume = "136",
pages = "334--340",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "1",

}

TY - JOUR

T1 - Principal component analysis reveals differential attentional modulation of the vocal response to pitch perturbation

AU - Okazaki, Shuntaro

AU - Mori, Koichi

AU - Okada, Minae

PY - 2014

Y1 - 2014

N2 - The auditory-vocal system modifies voice fundamental frequency (F0) with auditory feedback. The responses to F0 changes in auditory feedback are known to depend on the task. The hypothesis explored in this study is that the task dependency is the result of multiple components of the F0 responses differently modulated with different tasks. Attention to audition was manipulated by task condition by the instruction to ignore or to count the number of the F0 shifts heard during vocalization. A synthetic voice with pitch shifts was used as auditory pseudo-feedback. The upward and downward shifts evoked very similar vocal F0 response patterns with polarity reversal. Attention to the auditory feedback caused a reduction in the grand-average response amplitude. By decomposing the F0 responses with principal component analysis (PCA), three principal components (PCs) with different peak latencies were found to have contributions above the criterion of 5%, totaling to 74%. All three PCs contributed to a compensatory response under the "ignore" condition. The slowest PC changed its polarity and the intermediate PC was reduced to almost zero under the "count" condition. Thus, the task-dependency of the F0 response to auditory feedback can be described in terms of different sensitivities of components to attention.

AB - The auditory-vocal system modifies voice fundamental frequency (F0) with auditory feedback. The responses to F0 changes in auditory feedback are known to depend on the task. The hypothesis explored in this study is that the task dependency is the result of multiple components of the F0 responses differently modulated with different tasks. Attention to audition was manipulated by task condition by the instruction to ignore or to count the number of the F0 shifts heard during vocalization. A synthetic voice with pitch shifts was used as auditory pseudo-feedback. The upward and downward shifts evoked very similar vocal F0 response patterns with polarity reversal. Attention to the auditory feedback caused a reduction in the grand-average response amplitude. By decomposing the F0 responses with principal component analysis (PCA), three principal components (PCs) with different peak latencies were found to have contributions above the criterion of 5%, totaling to 74%. All three PCs contributed to a compensatory response under the "ignore" condition. The slowest PC changed its polarity and the intermediate PC was reduced to almost zero under the "count" condition. Thus, the task-dependency of the F0 response to auditory feedback can be described in terms of different sensitivities of components to attention.

UR - http://www.scopus.com/inward/record.url?scp=84903981081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84903981081&partnerID=8YFLogxK

U2 - 10.1121/1.4881921

DO - 10.1121/1.4881921

M3 - Article

VL - 136

SP - 334

EP - 340

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 1

ER -