Neural alpha oscillations index context-driven perception of ambiguous vowel sequences
Summary: Perception of bistable stimuli is influenced by prior context. In some cases, the interpretation matches with how the preceding stimulus was perceived; in others, it tends to be the opposite of the previous stimulus percept. We measured high-density electroencephalography (EEG) while partic...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004223025348 |
| _version_ | 1797388728970248192 |
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| author | Claude Alain Katharina Göke Dawei Shen Gavin M. Bidelman Lori J. Bernstein Joel S. Snyder |
| author_facet | Claude Alain Katharina Göke Dawei Shen Gavin M. Bidelman Lori J. Bernstein Joel S. Snyder |
| author_sort | Claude Alain |
| collection | DOAJ |
| description | Summary: Perception of bistable stimuli is influenced by prior context. In some cases, the interpretation matches with how the preceding stimulus was perceived; in others, it tends to be the opposite of the previous stimulus percept. We measured high-density electroencephalography (EEG) while participants were presented with a sequence of vowels that varied in formant transition, promoting the perception of one or two auditory streams followed by an ambiguous bistable sequence. For the bistable sequence, participants were more likely to report hearing the opposite percept of the one heard immediately before. This auditory contrast effect coincided with changes in alpha power localized in the left angular gyrus and left sensorimotor and right sensorimotor/supramarginal areas. The latter correlated with participants’ perception. These results suggest that the contrast effect for a bistable sequence of vowels may be related to neural adaptation in posterior auditory areas, which influences participants’ perceptual construal level of ambiguous stimuli. |
| first_indexed | 2024-03-08T22:45:01Z |
| format | Article |
| id | doaj.art-241ff63e5df0495291ba1ffd910ad487 |
| institution | Directory Open Access Journal |
| issn | 2589-0042 |
| language | English |
| last_indexed | 2024-03-08T22:45:01Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | iScience |
| spelling | doaj.art-241ff63e5df0495291ba1ffd910ad4872023-12-17T06:40:53ZengElsevieriScience2589-00422023-12-012612108457Neural alpha oscillations index context-driven perception of ambiguous vowel sequencesClaude Alain0Katharina Göke1Dawei Shen2Gavin M. Bidelman3Lori J. Bernstein4Joel S. Snyder5Rotman Research Institute, Toronto, ON M6A 2E1, Canada; Department of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada; Corresponding authorRotman Research Institute, Toronto, ON M6A 2E1, CanadaRotman Research Institute, Toronto, ON M6A 2E1, CanadaDepartment of Speech, Language and Hearing Sciences and Program in Neuroscience, Indiana University, Bloomington, IN 47408, USADepartment of Psychiatry, University of Toronto and University Health Network, Toronto, ON M5G 2C4, CanadaDepartment of Psychology, University of Nevada, Las Vegas, NV 89154, USASummary: Perception of bistable stimuli is influenced by prior context. In some cases, the interpretation matches with how the preceding stimulus was perceived; in others, it tends to be the opposite of the previous stimulus percept. We measured high-density electroencephalography (EEG) while participants were presented with a sequence of vowels that varied in formant transition, promoting the perception of one or two auditory streams followed by an ambiguous bistable sequence. For the bistable sequence, participants were more likely to report hearing the opposite percept of the one heard immediately before. This auditory contrast effect coincided with changes in alpha power localized in the left angular gyrus and left sensorimotor and right sensorimotor/supramarginal areas. The latter correlated with participants’ perception. These results suggest that the contrast effect for a bistable sequence of vowels may be related to neural adaptation in posterior auditory areas, which influences participants’ perceptual construal level of ambiguous stimuli.http://www.sciencedirect.com/science/article/pii/S2589004223025348AudiologyBehavioral neuroscienceSensory neuroscienceLinguistics |
| spellingShingle | Claude Alain Katharina Göke Dawei Shen Gavin M. Bidelman Lori J. Bernstein Joel S. Snyder Neural alpha oscillations index context-driven perception of ambiguous vowel sequences iScience Audiology Behavioral neuroscience Sensory neuroscience Linguistics |
| title | Neural alpha oscillations index context-driven perception of ambiguous vowel sequences |
| title_full | Neural alpha oscillations index context-driven perception of ambiguous vowel sequences |
| title_fullStr | Neural alpha oscillations index context-driven perception of ambiguous vowel sequences |
| title_full_unstemmed | Neural alpha oscillations index context-driven perception of ambiguous vowel sequences |
| title_short | Neural alpha oscillations index context-driven perception of ambiguous vowel sequences |
| title_sort | neural alpha oscillations index context driven perception of ambiguous vowel sequences |
| topic | Audiology Behavioral neuroscience Sensory neuroscience Linguistics |
| url | http://www.sciencedirect.com/science/article/pii/S2589004223025348 |
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