Lateralization of noise-burst trains based on onset and ongoing interaural delays
| Autor: | Patrick M. Zurek, Richard L. Freyman, Uma Balakrishnan |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Psychological Acoustics [66]
Adult Sound localization Auditory perception medicine.medical_specialty Signal Detection Psychological Time Factors Acoustics and Ultrasonics Computer science Acoustics Audiology Stimulus (physiology) Functional Laterality Lateralization of brain function Young Adult Audiometry Arts and Humanities (miscellaneous) medicine Humans Psychoacoustics medicine.diagnostic_test Time perception body regions Noise Burst noise Acoustic Stimulation Time Perception Auditory Perception Female Cues Binaural recording psychological phenomena and processes |
| Zdroj: | The Journal of the Acoustical Society of America. 128:320-331 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.3436560 |
| Popis: | The lateralization of 250-ms trains of brief noise bursts was measured using an acoustic pointing technique. Stimuli were designed to assess the contribution of the interaural time delay (ITD) of the onset binaural burst relative to that of the ITDs in the ongoing part of the train. Lateralization was measured by listeners' adjustments of the ITD of a pointer stimulus, a 50-ms burst of noise, to match the lateral position of the target train. Results confirmed previous reports of lateralization dominance by the onset burst under conditions in which the train is composed of frozen tokens and the ongoing part contains multiple ambiguous interaural delays. In contrast, lateralization of ongoing trains in which fresh noise tokens were used for each set of two alternating (left-leading/right-leading) binaural pairs followed the ITD of the first pair in each set, regardless of the ITD of the onset burst of the entire stimulus and even when the onset burst was removed by gradual gating. This clear lateralization of a long-duration stimulus with ambiguous interaural delay cues suggests precedence mechanisms that involve not only the interaural cues at the beginning of a sound, but also the pattern of cues within an ongoing sound. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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