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Updated: May 22, 2026
07:14
A Method to Study Adaptation to Left-Right Reversed Audition
Published on: October 29, 2018
Amplitude and phase-shift effects on dichotic listening performance
Murat Ozgoren1, Onur Bayazit, Adile Oniz
1Department of Biophysics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey. murat.ozgoren@deu.edu.tr
International Journal of Audiology
|May 9, 2012
Summary
This study explored how amplitude and phase shifts interact in dichotic listening (DL). Results show that while amplitude shifts strongly influence right ear advantage, phase shifts have a more pronounced effect on left ear advantage, especially when favoring the left ear.
Area of Science:
- Auditory Neuroscience
- Psychoacoustics
- Human Perception
Background:
- Dichotic listening (DL) studies reveal amplitude and phase shifts significantly impact ear advantage.
- The interaction between amplitude and phase shifts in DL remains underexplored.
Purpose of the Study:
- To investigate the combined effects of simultaneous amplitude and phase shifts on dichotic ear advantage.
- To understand how these acoustic factors interact and influence auditory perception.
Main Methods:
- Thirty-two healthy adults participated in a dichotic listening task.
- Participants identified consonant-vowel syllables under nine conditions with varying amplitude (+9 dB) and phase (+35 ms) shifts.
Main Results:
- A right ear advantage (REA) was observed in the baseline condition.
- Amplitude shifts favoring the right ear had a greater impact on REA than phase shifts.
- Phase shifts favoring the left ear showed a stronger effect on left ear advantage (LEA) compared to amplitude shifts.
Conclusions:
- Findings suggest differential impacts of amplitude and phase shifts on ear advantage.
- Results may inform the development of targeted auditory and phonetic training tools for individuals with processing deficits.
- Optimal training strategies could leverage specific combinations of acoustic and phonetic stimuli.
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