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Sensitivity to temporal structure facilitates perceptual analysis of complex auditory scenes
Lucie Aman1, Samantha Picken2, Lefkothea-Vasiliki Andreou3
1Ear Institute, University College London, 332 Gray's Inn Road, London WC1X 8EE, UK; Department of Psychiatry, University of Cambridge, Cambridge, UK.
Hearing Research
|December 17, 2020
Summary
Listeners
Area of Science:
- Auditory perception
- Statistical learning in hearing
Background:
- Perception is influenced by environmental statistical structure.
- Auditory scene analysis involves integrating multiple sound streams.
Purpose of the Study:
- Investigate the role of temporal regularity in auditory perception.
- Determine how listeners process complex acoustic scenes.
Main Methods:
- Used artificial soundscapes with up to 14 simultaneous tone-pip streams.
- Varied temporal regularity of individual streams and the overall scene.
- Assessed listener ability to detect stream onsets and offsets.
Main Results:
- Detection of stream changes was facilitated by temporal regularity.
- Regularity of both target and background streams independently improved detection.
- Benefits of regularity persisted even without conscious awareness.
Conclusions:
- Auditory perception relies on automatically extracted regularities from complex soundscapes.
- Detailed representations of temporal patterns are crucial for scene analysis.
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