Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception
IntroductionSpoken language comprehension requires listeners map continuous features of the speech signal to discrete category labels. Categories are however malleable to surrounding context and stimulus precedence; listeners’ percept can dynamically shift depending on the sequencing of adjacent sti...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Neuroscience |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnins.2023.1032369/full |
| _version_ | 1811162588872966144 |
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| author | Gavin M. Bidelman Gavin M. Bidelman Jared A. Carter Jared A. Carter |
| author_facet | Gavin M. Bidelman Gavin M. Bidelman Jared A. Carter Jared A. Carter |
| author_sort | Gavin M. Bidelman |
| collection | DOAJ |
| description | IntroductionSpoken language comprehension requires listeners map continuous features of the speech signal to discrete category labels. Categories are however malleable to surrounding context and stimulus precedence; listeners’ percept can dynamically shift depending on the sequencing of adjacent stimuli resulting in a warping of the heard phonetic category. Here, we investigated whether such perceptual warping—which amplify categorical hearing—might alter speech processing in noise-degraded listening scenarios.MethodsWe measured continuous dynamics in perception and category judgments of an acoustic-phonetic vowel gradient via mouse tracking. Tokens were presented in serial vs. random orders to induce more/less perceptual warping while listeners categorized continua in clean and noise conditions.ResultsListeners’ responses were faster and their mouse trajectories closer to the ultimate behavioral selection (marked visually on the screen) in serial vs. random order, suggesting increased perceptual attraction to category exemplars. Interestingly, order effects emerged earlier and persisted later in the trial time course when categorizing speech in noise.DiscussionThese data describe interactions between perceptual warping in categorization and speech-in-noise perception: warping strengthens the behavioral attraction to relevant speech categories, making listeners more decisive (though not necessarily more accurate) in their decisions of both clean and noise-degraded speech. |
| first_indexed | 2024-04-10T06:31:55Z |
| format | Article |
| id | doaj.art-6f46da7f4ed1443881dc03ca1439b1b8 |
| institution | Directory Open Access Journal |
| issn | 1662-453X |
| language | English |
| last_indexed | 2024-04-10T06:31:55Z |
| publishDate | 2023-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Neuroscience |
| spelling | doaj.art-6f46da7f4ed1443881dc03ca1439b1b82023-03-01T06:08:42ZengFrontiers Media S.A.Frontiers in Neuroscience1662-453X2023-03-011710.3389/fnins.2023.10323691032369Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perceptionGavin M. Bidelman0Gavin M. Bidelman1Jared A. Carter2Jared A. Carter3Department of Speech, Language and Hearing Sciences, Indiana University, Bloomington, IN, United StatesProgram in Neuroscience, Indiana University, Bloomington, IN, United StatesSchool of Communication Sciences and Disorders, University of Memphis, Memphis, TN, United StatesHearing Sciences – Scottish Section, Division of Clinical Neuroscience, School of Medicine, University of Nottingham, Glasgow, United KingdomIntroductionSpoken language comprehension requires listeners map continuous features of the speech signal to discrete category labels. Categories are however malleable to surrounding context and stimulus precedence; listeners’ percept can dynamically shift depending on the sequencing of adjacent stimuli resulting in a warping of the heard phonetic category. Here, we investigated whether such perceptual warping—which amplify categorical hearing—might alter speech processing in noise-degraded listening scenarios.MethodsWe measured continuous dynamics in perception and category judgments of an acoustic-phonetic vowel gradient via mouse tracking. Tokens were presented in serial vs. random orders to induce more/less perceptual warping while listeners categorized continua in clean and noise conditions.ResultsListeners’ responses were faster and their mouse trajectories closer to the ultimate behavioral selection (marked visually on the screen) in serial vs. random order, suggesting increased perceptual attraction to category exemplars. Interestingly, order effects emerged earlier and persisted later in the trial time course when categorizing speech in noise.DiscussionThese data describe interactions between perceptual warping in categorization and speech-in-noise perception: warping strengthens the behavioral attraction to relevant speech categories, making listeners more decisive (though not necessarily more accurate) in their decisions of both clean and noise-degraded speech.https://www.frontiersin.org/articles/10.3389/fnins.2023.1032369/fullcategorical perceptiongradient perceptionhysteresismouse-trackingspeech-in-noise perception |
| spellingShingle | Gavin M. Bidelman Gavin M. Bidelman Jared A. Carter Jared A. Carter Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception Frontiers in Neuroscience categorical perception gradient perception hysteresis mouse-tracking speech-in-noise perception |
| title | Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception |
| title_full | Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception |
| title_fullStr | Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception |
| title_full_unstemmed | Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception |
| title_short | Continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech-in-noise perception |
| title_sort | continuous dynamics in behavior reveal interactions between perceptual warping in categorization and speech in noise perception |
| topic | categorical perception gradient perception hysteresis mouse-tracking speech-in-noise perception |
| url | https://www.frontiersin.org/articles/10.3389/fnins.2023.1032369/full |
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