Interaction of spatial and non‐spatial cues in auditory stream segregation in the European starling
| Autor: | Georg M. Klump, Naoya Itatani |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Auditory scene analysis
media_common.quotation_subject Speech recognition 03 medical and health sciences Tone (musical instrument) Prosencephalon 0302 clinical medicine Perception medicine Animals Auditory system Sensory cue 030304 developmental biology media_common 0303 health sciences Communication biology business.industry General Neuroscience biology.organism_classification Songbird medicine.anatomical_structure Acoustic Stimulation Sturnus Starlings Auditory Perception Cues Percept business Psychology 030217 neurology & neurosurgery |
| Zdroj: | European Journal of Neuroscience. 51:1191-1200 |
| ISSN: | 1460-9568 0953-816X |
| DOI: | 10.1111/ejn.13716 |
| Popis: | Integrating sounds from the same source and segregating sounds from different sources in an acoustic scene is an essential function of the auditory system. Naturally, the auditory system simultaneously makes use of multiple cues. Here, we investigate the interaction between spatial cues and frequency cues in stream segregation of European starlings (Sturnus vulgaris) using an objective measure of perception. Neural responses to streaming sounds were recorded while the bird was performing a behavioral task that results in a higher sensitivity during a one-stream than a two-stream percept. Birds were trained to detect an onset time shift of a B tone in an ABA- triplet sequence in which A and B could differ in frequency and/or spatial location. If the frequency difference or spatial separation between the signal sources or both were increased, the behavioral time shift detection performance deteriorated. Spatial separation had a smaller effect on the performance compared to the frequency difference and both cues additively affected the performance. Neural responses in the primary auditory forebrain were affected by the frequency and spatial cues. However, frequency and spatial cue differences being sufficiently large to elicit behavioral effects did not reveal correlated neural response differences. The difference between the neuronal response pattern and behavioral response is discussed with relation to the task given to the bird. Perceptual effects of combining different cues in auditory scene analysis indicate that these cues are analyzed independently and given different weights suggesting that the streaming percept arises consecutively to initial cue analysis. This article is protected by copyright. All rights reserved. |
| Databáze: | OpenAIRE |
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