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Effects of transient auditory deprivation during critical periods on the development of auditory temporal processing

Title
Effects of transient auditory deprivation during critical periods on the development of auditory temporal processing
Authors
Kim B.J.Kim J.Park I.-Y.Jung J.Y.Suh M.-W.Oh S.-H.
Ewha Authors
김정윤
SCOPUS Author ID
김정윤scopus
Issue Date
2018
Journal Title
International Journal of Pediatric Otorhinolaryngology
ISSN
0165-5876JCR Link
Citation
vol. 104, pp. 66 - 71
Keywords
Critical periodGap detectionOtitis mediaStartle reflexTemporal processingTransient auditory deprivation
Publisher
Elsevier Ireland Ltd
Indexed
SCI; SCIE; SCOPUS scopus
Abstract
Objectives The central auditory pathway matures through sensory experiences and it is known that sensory experiences during periods called critical periods exert an important influence on brain development. The present study aimed to investigate whether temporary auditory deprivation during critical periods (CPs) could have a detrimental effect on the development of auditory temporal processing. Materials and methods Twelve neonatal rats were randomly assigned to control and study groups; Study group experienced temporary (18–20 days) auditory deprivation during CPs (Early deprivation study group). Outcome measures included changes in auditory brainstem response (ABR), gap prepulse inhibition of the acoustic startle reflex (GPIAS), and gap detection threshold (GDT). To further delineate the specific role of CPs in the outcome measures above, the same paradigm was applied in adult rats (Late deprivation group) and the findings were compared with those of the neonatal rats. Results Soon after the restoration of hearing, early deprivation study animals showed a significantly lower GPIAS at intermediate gap durations and a larger GDT than early deprivation controls, but these differences became insignificant after subsequent auditory inputs. Additionally, the ABR results showed significantly delayed latencies of waves IV, V, and interpeak latencies of wave I-III and wave I-V in study group. Late deprivation group didn't exhibit any deterioration in temporal processing following sensory deprivation. Conclusion Taken together, the present results suggest that transient auditory deprivation during CPs might cause reversible disruptions in the development of temporal processing. © 2017 Elsevier B.V.
DOI
10.1016/j.ijporl.2017.10.045
Appears in Collections:
연구기관 > 뇌융합과학연구원 > Journal papers
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