Open AccessInterhemispheric Auditory Cortical Synchronization in Asymmetric Hearing Loss
Author(s) -
Jolie L. Chang,
Ethan D Crawford,
Abhishek S. Bhutada,
Jennifer Henderson Sabes,
Jessie Chen,
Chang Cai,
Corby L. Dale,
Anne Findlay,
Danielle Mizuiri,
Srikantan S. Nagarajan,
Steven W. Cheung
Publication year - 2021
Publication title -
ear and hearing
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.577
H-Index - 109
eISSN - 1538-4667
pISSN - 0196-0202
DOI - 10.1097/aud.0000000000001027
Subject(s) - audiology , monaural , auditory cortex , magnetoencephalography , longitudinal study , hearing loss , dichotic listening , psychology , sound localization , binaural recording , medicine , neuroscience , electroencephalography , pathology
Auditory cortical activation of the two hemispheres to monaurally presented tonal stimuli has been shown to be asynchronous in normal hearing (NH) but synchronous in the extreme case of adult-onset asymmetric hearing loss (AHL) with single-sided deafness. We addressed the wide knowledge gap between these two anchoring states of interhemispheric temporal organization. The objectives of this study were as follows: (1) to map the trajectory of interhemispheric temporal reorganization from asynchrony to synchrony using magnitude of interaural threshold difference as the independent variable in a cross-sectional study and (2) to evaluate reversibility of interhemispheric synchrony in association with hearing in noise performance by amplifying the aidable poorer ear in a repeated measures, longitudinal study.