Lexically guided perceptual tuning of internal phonetic category structure

Drouin, Julia R.; Theodore, Rachel M.; Myers, Emily B.

doi:10.1121/1.4964468

Cited by 28 publications

(23 citation statements)

References 20 publications

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“…Schematic showing the probability density function over the centroid frequencies of the “s” and “sh” tokens that listeners hear on each block of the LD task (see Drouin, Theodore & Myers, 2016). Blue shows the “sh” tokens, red shows the “s” tokens.…”

Section: Figurementioning

confidence: 99%

RETRACTED ARTICLE: Listeners are maximally flexible in updating phonetic beliefs over time

Saltzman

Myers

2017

Psychon Bull Rev

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Perceptual learning serves as a mechanism for listeners to adapt to novel phonetic information. Distributional tracking theories posit that this adaptation occurs as a result of listeners accumulating talker-specific distributional information about the phonetic category in question (Kleinschmidt & Jaeger, 2015). What is not known is how listeners build these talker-specific distributions; that is, if they aggregate all information received over a certain time period, or if they rely more heavily upon the most recent information received and down-weight older, consolidated information. In the present experiment, listeners were exposed to four interleaved blocks of a lexical decision task and a phonetic categorization task in which the lexical decision blocks were designed to bias perception in opposite directions of a “s”-“sh” contrast. Listeners returned several days later and completed the identical task again. Evidence was consistent with listeners using a relatively short temporal window of integration at the individual session level. Namely, in each individual session, listener’s perception of a “s”-“sh” contrast was biased by the information in the immediately preceding lexical decision block, and there was no evidence that listeners summed their experience with the talker over the entire session. Similarly, the magnitude of the bias effect did not change between sessions, consistent with the idea that talker-specific information remains flexible, even after consolidation. In general, results suggest that listeners are maximally flexible when considering how to categorize speech from a novel talker.

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Section: Figurementioning

confidence: 99%

RETRACTED ARTICLE: Listeners are maximally flexible in updating phonetic beliefs over time

Saltzman

Myers

2017

Psychon Bull Rev

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“…Current research from our laboratory is examining this question to observe whether learning an ambiguous fricative limits the listener to restructuring only at the category boundary, or whether this type of learning also results in changes in internal category structure (Drouin, Theodore & Myers, 2016). In this study, listeners were exposed to an ambiguous fricative midway between an /s/ and /ʃ/ during a lexical decision training task.…”

Section: Talker-specificity For Between Category Variationmentioning

confidence: 99%

Talker-specificity effects in spoken language processing: Now you see them, now you don’t

Drouin¹,

Monto²,

Theodore³

et al. 2017

The Speech Processing Lexicon

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A fundamental goal of research in the domain of speech perception has been to describe how listeners resolve the lack-of-invariance problem in order to achieve stable word recognition. Here we review work from our laboratory and others that has examined the representational nature of prelexical and lexical knowledge by considering the degree to which listeners customize the mapping from the acoustic signal to meaning on a talker-specific basis. One central finding is that while talker-specificity effects in speech perception are observed frequently, they are not absolute, and seem to be influenced by rich interactions within the cognitive and language architectures. We consider these findings with respect to their implications for abstract and episodic accounts of spoken word recognition.

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“…These findings have been formalized as the "lack of invariance" problem for speech perception, which reflects the fact that there is no one-to-one mapping between the acoustic signal and a given speech sound. However, structured variability is not inherently negative as it can give listeners information about the talker, for example, which listeners can use to dynamically modify the structure of phonetic category representations (e.g., Allen, Miller, & DeSteno, 2003;Clayards, Tanenhaus, Aslin, & Jacobs, 2008;Drouin, Theodore, & Myers, 2016;Miller, 1994;Theodore et al, 2009).…”

Section: Lexical Effects In Nh Usersmentioning

confidence: 99%

“…In this paradigm, listeners complete a brief training exposure phase followed by a test phase. During the training phase, participants listen to words and nonwords and complete a lexical decision task (Drouin et al, 2016;Drouin & Theodore, 2018;Kraljic & Samuel, 2005;Norris et al, 2003). Critically, listeners are exposed to an atypical production during the training phase, such as a fricative that is spectrally ambiguous between /s/ and /ʃ/.…”

Section: A Role For Lexical Informationmentioning

confidence: 99%

Leveraging interdisciplinary perspectives to optimize auditory training for cochlear implant users

Drouin

Theodore

2020

Language and Linguist. Compass

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This review examines the role of auditory training on speech adaptation for cochlear implant users. A current limitation of the existing evidence base is the failure to adequately account for wide variability in speech perception outcomes following implantation. While many preimplantation factors contribute to the variance observed in outcomes, formal auditory training has been proposed as a way to maximize speech comprehension benefits for cochlear implant users. We adopt an interdisciplinary perspective and focus on integrating the clinical rehabilitation literature with basic research examining perceptual learning of speech. We review findings on the role of auditory training for improving perception of degraded speech signals in normal hearing listeners, with emphasis on how lexically oriented training paradigms may facilitate speech comprehension when the acoustic input is diminished. We conclude with recommendations for future research that could foster translation of principles of speech learning in normal hearing listeners to aural rehabilitation protocols for cochlear implant patients.

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Lexically guided perceptual tuning of internal phonetic category structure

Cited by 28 publications

References 20 publications

RETRACTED ARTICLE: Listeners are maximally flexible in updating phonetic beliefs over time

RETRACTED ARTICLE: Listeners are maximally flexible in updating phonetic beliefs over time

Talker-specificity effects in spoken language processing: Now you see them, now you don’t

Leveraging interdisciplinary perspectives to optimize auditory training for cochlear implant users

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