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Interaural recalibration of phonetic categories
1Department of English Literature and Linguistics, Qatar University, Doha Qatarmark.a.j.scott@gmail.com.
The Journal of the Acoustical Society of America
|March 2, 2020
Summary
Perceptual recalibration adjusts speech-sound boundaries through new information. This study demonstrates interaural recalibration, where sounds in one ear adjust based on clear sounds in the other, even without awareness of location differences.
Area of Science:
- Auditory Perception
- Neuroscience
- Speech Processing
Background:
- Recalibration is a learning process altering speech-sound perception.
- Auditory system adjusts perceptual boundaries with new information.
Purpose of the Study:
- To establish interaural recalibration, a novel form of auditory recalibration.
- To investigate if location-specific recalibration occurs unconsciously.
Main Methods:
- Dichotic listening methodology was employed.
- Ambiguous speech sounds were presented to one ear.
- Clear speech sounds were presented to the contralateral ear.
Main Results:
- Interaural recalibration was successfully established.
- Speech-sound perception adjusted based on contralateral auditory input.
- Location-specific recalibration occurred without explicit awareness of sound location differences.
Conclusions:
- A previously unknown form of recalibration, interaural recalibration, has been demonstrated.
- Auditory recalibration is sensitive to location cues even when not consciously perceived.
- This highlights the brain's ability to adapt speech perception based on cross-ear auditory information.
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