Older listeners' decreased flexibility in adjusting to changes in speech signal reliability

Laurence Bruggeman; Esther Janse

Older listeners' decreased flexibility in adjusting to changes in speech signal reliability

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

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Abstract

Under noise or speech reductions, young adult listeners flexibly adjust the parameters of lexical activation and competition to allow for speech signal unreliability. Consequently, mismatches in the input are treated more leniently such that lexical candidates are not immediately deactivated. Using eyetracking, we assessed whether this modulation of recognition dynamics also occurs for older listeners. Dutch participants (aged 60+) heard Dutch sentences containing a critical word while viewing displays of four line drawings. The name of one picture shared either onset or rhyme with the critical word (i.e., was a phonological competitor). Sentences were either clear and noise-free, or had several phonemes replaced by bursts of noise. A larger preference for onset competitors than for rhyme competitors was observed in both clear and noise conditions; performance did not alter across condition. This suggests that dynamic adjustment of spoken-word recognition parameters in response to noise is less available to older listeners.

Original language	English
Title of host publication	Proceedings of the 18th International Congress of Phonetic Sciences
Editors	The Scottish Consortium for ICPhS 2015
Place of Publication	London
Publisher	International Phonetic Association
Number of pages	5
ISBN (Print)	9780852619414
Publication status	Published - 2015
Externally published	Yes
Event	International congress of phonetic sciences (18th : 2015) - Glasgow, UK Duration: 10 Aug 2015 → 14 Aug 2015

Conference

Conference	International congress of phonetic sciences (18th : 2015)
City	Glasgow, UK
Period	10/08/15 → 14/08/15

Bibliographical note

Copyright the Author(s) 2015. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

spoken-word recognition
aging
processing dynamics
hearing loss

Access to Document

Publisher version (open access)Final published version, 126 KBLicence: Unspecified

http://www.icphs2015.info/pdfs/proceedings.html

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Cite this

Bruggeman, L., & Janse, E. (2015). Older listeners' decreased flexibility in adjusting to changes in speech signal reliability. In The Scottish Consortium for ICPhS 2015 (Ed.), Proceedings of the 18th International Congress of Phonetic Sciences London: International Phonetic Association.

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title = "Older listeners' decreased flexibility in adjusting to changes in speech signal reliability",

abstract = "Under noise or speech reductions, young adult listeners flexibly adjust the parameters of lexical activation and competition to allow for speech signal unreliability. Consequently, mismatches in the input are treated more leniently such that lexical candidates are not immediately deactivated. Using eyetracking, we assessed whether this modulation of recognition dynamics also occurs for older listeners. Dutch participants (aged 60+) heard Dutch sentences containing a critical word while viewing displays of four line drawings. The name of one picture shared either onset or rhyme with the critical word (i.e., was a phonological competitor). Sentences were either clear and noise-free, or had several phonemes replaced by bursts of noise. A larger preference for onset competitors than for rhyme competitors was observed in both clear and noise conditions; performance did not alter across condition. This suggests that dynamic adjustment of spoken-word recognition parameters in response to noise is less available to older listeners.",

keywords = "spoken-word recognition, aging, processing dynamics, hearing loss",

author = "Laurence Bruggeman and Esther Janse",

note = "Copyright the Author(s) 2015. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2015",

language = "English",

isbn = "9780852619414",

editor = "{The Scottish Consortium for ICPhS 2015}",

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Older listeners' decreased flexibility in adjusting to changes in speech signal reliability. / Bruggeman, Laurence; Janse, Esther.

Proceedings of the 18th International Congress of Phonetic Sciences. ed. / The Scottish Consortium for ICPhS 2015. London : International Phonetic Association, 2015.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution

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T1 - Older listeners' decreased flexibility in adjusting to changes in speech signal reliability

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AU - Janse, Esther

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AB - Under noise or speech reductions, young adult listeners flexibly adjust the parameters of lexical activation and competition to allow for speech signal unreliability. Consequently, mismatches in the input are treated more leniently such that lexical candidates are not immediately deactivated. Using eyetracking, we assessed whether this modulation of recognition dynamics also occurs for older listeners. Dutch participants (aged 60+) heard Dutch sentences containing a critical word while viewing displays of four line drawings. The name of one picture shared either onset or rhyme with the critical word (i.e., was a phonological competitor). Sentences were either clear and noise-free, or had several phonemes replaced by bursts of noise. A larger preference for onset competitors than for rhyme competitors was observed in both clear and noise conditions; performance did not alter across condition. This suggests that dynamic adjustment of spoken-word recognition parameters in response to noise is less available to older listeners.

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KW - aging

KW - processing dynamics

KW - hearing loss

M3 - Conference proceeding contribution

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BT - Proceedings of the 18th International Congress of Phonetic Sciences

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