Sensory Inhibition and Speech Perception-in-Noise Performance in Children With Normal Hearing
Julia Campbell1, Rixon Rouse1, Mashhood Nielsen1
1Central Sensory Processes Laboratory, Department of Speech, Language, and Hearing Sciences, The University of Texas at Austin.
Journal of Speech, Language, and Hearing Research : JSLHR
|December 8, 2022
Summary
Children
Area of Science:
- Neuroscience
- Auditory Perception
- Developmental Psychology
Background:
- Sensory inhibition plays a role in auditory processing.
- Understanding sensory inhibition in children is crucial for auditory development.
Purpose of the Study:
- To investigate the association between sensory inhibition and speech perception in noise in children.
- To identify brain networks involved in sensory inhibition using sLORETA.
- To optimize the detection of the cortical auditory evoked potential (CAEP) N1 response.
Main Methods:
- Cortical auditory evoked potential (CAEP) gating responses were recorded using high-density electroencephalography in children and adults.
- Amplitude gating indices were correlated with speech perception in noise performance.
- Standardized low-resolution brain electromagnetic tomography (sLORETA) was used to estimate gating generators.
Main Results:
- Children exhibited reduced sensory inhibition (gating) compared to adults.
- A trend suggested better speech perception in noise was associated with decreased N2 gating in children.
- Incomplete compensatory gating networks were observed in children, correlating with reduced gating.
Conclusions:
- The relationship between sensory inhibition and speech perception in children appears tenuous, possibly relevant only for atypical speech perception.
- The 4- to 30-Hz filter settings are critical for detecting the N1 response.
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