Perceptual Hearing Sensitivity During Vocal Production

Overview

Journal iScience

Publisher Cell Press

Date 2022 Nov 17

PMID 36388966

Authors

Huan Ye

Jinhong Luo

Affiliations

Soon will be listed here.

Abstract

Vocalization, such as speaking, inevitably generates sensory feedback that can cause self-generated masking. However, perceptual hearing sensitivity during vocal production is poorly understood. Using an adaptive psychophysical method, we measured the perceptual hearing sensitivity of an echolocating bat, , in a passive listening (PL) task to detect pure tones, an active listening (AL) task to detect pure tones triggered by its vocalization, and a phantom echo task. We found that hanging . had the best hearing sensitivity of approximately 0 dB sound pressure level (SPL) in the PL task but much lower hearing sensitivity (nearly 40 dB worse) in the echo task. In the AL task, all bats gradually increased call frequency by 0.8-1.1 kHz, which improved their hearing sensitivity by 25-29 dB. This study underscores the need for studying the sensory capability of subjects engaged in active behaviors.

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