Auditory cortical stimulability in non habilitated individuals – An evidence from CAEPs

IF 1.4 Q2 OTORHINOLARYNGOLOGY

Journal of Otology Pub Date : 2022-07-01 DOI:10.1016/j.joto.2022.05.001

Hariprakash Palaniswami , Aju Abraham , Krishna Yerraguntla

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引用次数: 0

Abstract

Objective

The effect of long term auditory deprivation on Cortical Auditory Evoked Potentials (CAEPs) especially in human models is not well explored. Hence, the current study was aimed to investigate the effects of long-term auditory deprivation and stimulability of auditory cortex in non habilitated congenitally deaf adolescents and adults using CAEPs.

Methods and Results

A total of 27 non-habilitated congenitally deaf adolescents/adults with age and gender matched normal hearing adolescents/adults participated in the study. The congenitally deaf group was fitted with high gain hearing aids (first fit). Further, the CAEPs were recorded. The obtained CAEP components were assessed for group effect, source and topographical differences. The between group analysis for CAEP responses showed a significant difference only for P2 latency and amplitude. The source analysis revealed that, in the normal hearing group for CAEPs, the sources were within the temporal regions. However, in the congenitally deaf group, along with the temporal cortex, the bilateral prefrontal cortex also was activated.

Conclusion

The findings revealed that it is possible to stimulate and evoke a matured CAEP response from a long deprived auditory system with adequate acoustic stimulation. The presence of CAEP responses is indicative of the functionality of the innate auditory pathway and the crossmodal plasticity in long auditory deprived individuals.

Abstract Image

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非适应能力个体的听觉皮层刺激-来自caep的证据

目的探讨长期听觉剥夺对皮层听觉诱发电位(caep)的影响，特别是对人体的影响。因此，本研究旨在探讨长期听觉剥夺对非适应型先天性耳聋青少年和成人听觉皮层刺激能力的影响。方法与结果选取年龄、性别与正常听力青少年/成人相匹配的27例非适应型先天性耳聋青少年/成人参与研究。先天性耳聋组首次配戴高增益助听器。此外，记录caep。对获得的CAEP成分进行群体效应、来源和地形差异评估。CAEP反应的组间分析显示，只有P2潜伏期和振幅有显著差异。源分析显示，在caep的正常听力组中，源位于颞区。然而，在先天失聪组中，除了颞叶皮层，双侧前额叶皮层也被激活。结论充分的声刺激可以刺激和唤起长期被剥夺听觉系统的成熟CAEP反应。CAEP反应的存在表明先天听觉通路的功能和长时间听觉剥夺个体的跨模可塑性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Otology Medicine-Otorhinolaryngology

CiteScore

2.70

自引率

0.00%

发文量

461

审稿时长

18 days

期刊介绍： Journal of Otology is an open access, peer-reviewed journal that publishes research findings from disciplines related to both clinical and basic science aspects of auditory and vestibular system and diseases of the ear. This journal welcomes submissions describing original experimental research that may improve our understanding of the mechanisms underlying problems of basic or clinical significance and treatment of patients with disorders of the auditory and vestibular systems. In addition to original papers the journal also offers invited review articles on current topics written by leading experts in the field. The journal is of primary importance for all scientists and practitioners interested in audiology, otology and neurotology, auditory neurosciences and related disciplines. Journal of Otology welcomes contributions from scholars in all countries and regions across the world.