Effects of transient auditory deprivation during critical periods on the development of auditory temporal processing
- 주제(키워드) Critical period , Transient auditory deprivation , Startle reflex , Gap detection , Temporal processing , Otitis media
- 주제(기타) Otorhinolaryngology; Pediatrics
- 설명문(일반) [Kim, Bong Jik] Seoul Natl Univ, Coll Med, Wide River Inst Immunol, Seoul, South Korea; [Kim, Jungyoon] Ewha Womans Univ, Ewha Brain Inst, Seoul, South Korea; [Park, Il-Yong] Dankook Univ, Coll Med, Dept Biomed Engn, Cheonan, South Korea; [Jung, Jae Yun] Dankook Univ, Coll Med, Dept Otolaryngol Head & Neck Surg, Cheonan, South Korea; [Suh, Myung-Whan; Oh, Seung-ha] Seoul Natl Univ Hosp, Dept Otorhinolaryngol Head & Neck Surg, 101 Daehak Ro, Seoul 03080, South Korea; [Suh, Myung-Whan; Oh, Seung-ha] Seoul Natl Univ, Med Res Ctr, Sensory Organ Res Inst, Seoul, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- 발행기관 ELSEVIER IRELAND LTD
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000149990
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.ijpor1.2017.10.045
초록/요약
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 and wave 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.
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