Cargando…

Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals

Several studies have reported the better auditory performance of early-blind subjects over sighted subjects. However, few studies have compared the auditory functions of both hemispheres or evaluated interhemispheric transfer and binaural integration in blind individuals. Therefore, we evaluated whe...

Descripción completa

Detalles Bibliográficos
Autores principales: Bae, Eun Bit, Jang, Hyunsook, Shim, Hyun Joon
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9127502/
https://www.ncbi.nlm.nih.gov/pubmed/35619788
http://dx.doi.org/10.3389/fpsyg.2022.840541
_version_ 1784712367046656000
author Bae, Eun Bit
Jang, Hyunsook
Shim, Hyun Joon
author_facet Bae, Eun Bit
Jang, Hyunsook
Shim, Hyun Joon
author_sort Bae, Eun Bit
collection PubMed
description Several studies have reported the better auditory performance of early-blind subjects over sighted subjects. However, few studies have compared the auditory functions of both hemispheres or evaluated interhemispheric transfer and binaural integration in blind individuals. Therefore, we evaluated whether there are differences in dichotic listening, auditory temporal sequencing ability, or speech perception in noise (all of which have been used to diagnose central auditory processing disorder) between early-blind subjects and sighted subjects. The study included 23 early-blind subjects and 22 age-matched sighted subjects. In the dichotic listening test (three-digit pair), the early-blind subjects achieved higher scores than the sighted subjects in the left ear (p = 0.003, Bonferroni’s corrected α = 0.05/6 = 0.008), but not in the right ear, indicating a right ear advantage in sighted subjects (p < 0.001) but not in early-blind subjects. In the frequency patterning test (five tones), the early-blind subjects performed better (both ears in the humming response, but the left ear only in the labeling response) than the sighted subjects (p < 0.008, Bonferroni’s corrected α = 0.05/6 = 0.008). Monosyllable perception in noise tended to be better in early-blind subjects than in sighted subjects at a signal-to-noise ratio of –8 (p = 0.054), the results at signal-to-noise ratios of –4, 0, +4, and +8 did not differ. Acoustic change complex responses to/ba/in babble noise, recorded with electroencephalography, showed a greater N1 peak amplitude at only FC5 electrode under a signal-to-noise ratio of –8 and –4 dB in the early-blind subjects than in the sighted subjects (p = 0.004 and p = 0.003, respectively, Bonferroni’s corrected α = 0.05/5 = 0.01). The results of this study revealed early-blind subjects exhibited some advantages in dichotic listening, and temporal sequencing ability compared to those shown in sighted subjects. These advantages may be attributable to the enhanced activity of the central auditory nervous system, especially the right hemisphere function, and the transfer of auditory information between the two hemispheres.
format Online
Article
Text
id pubmed-9127502
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-91275022022-05-25 Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals Bae, Eun Bit Jang, Hyunsook Shim, Hyun Joon Front Psychol Psychology Several studies have reported the better auditory performance of early-blind subjects over sighted subjects. However, few studies have compared the auditory functions of both hemispheres or evaluated interhemispheric transfer and binaural integration in blind individuals. Therefore, we evaluated whether there are differences in dichotic listening, auditory temporal sequencing ability, or speech perception in noise (all of which have been used to diagnose central auditory processing disorder) between early-blind subjects and sighted subjects. The study included 23 early-blind subjects and 22 age-matched sighted subjects. In the dichotic listening test (three-digit pair), the early-blind subjects achieved higher scores than the sighted subjects in the left ear (p = 0.003, Bonferroni’s corrected α = 0.05/6 = 0.008), but not in the right ear, indicating a right ear advantage in sighted subjects (p < 0.001) but not in early-blind subjects. In the frequency patterning test (five tones), the early-blind subjects performed better (both ears in the humming response, but the left ear only in the labeling response) than the sighted subjects (p < 0.008, Bonferroni’s corrected α = 0.05/6 = 0.008). Monosyllable perception in noise tended to be better in early-blind subjects than in sighted subjects at a signal-to-noise ratio of –8 (p = 0.054), the results at signal-to-noise ratios of –4, 0, +4, and +8 did not differ. Acoustic change complex responses to/ba/in babble noise, recorded with electroencephalography, showed a greater N1 peak amplitude at only FC5 electrode under a signal-to-noise ratio of –8 and –4 dB in the early-blind subjects than in the sighted subjects (p = 0.004 and p = 0.003, respectively, Bonferroni’s corrected α = 0.05/5 = 0.01). The results of this study revealed early-blind subjects exhibited some advantages in dichotic listening, and temporal sequencing ability compared to those shown in sighted subjects. These advantages may be attributable to the enhanced activity of the central auditory nervous system, especially the right hemisphere function, and the transfer of auditory information between the two hemispheres. Frontiers Media S.A. 2022-05-10 /pmc/articles/PMC9127502/ /pubmed/35619788 http://dx.doi.org/10.3389/fpsyg.2022.840541 Text en Copyright © 2022 Bae, Jang and Shim. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Psychology
Bae, Eun Bit
Jang, Hyunsook
Shim, Hyun Joon
Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals
title Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals
title_full Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals
title_fullStr Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals
title_full_unstemmed Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals
title_short Enhanced Dichotic Listening and Temporal Sequencing Ability in Early-Blind Individuals
title_sort enhanced dichotic listening and temporal sequencing ability in early-blind individuals
topic Psychology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9127502/
https://www.ncbi.nlm.nih.gov/pubmed/35619788
http://dx.doi.org/10.3389/fpsyg.2022.840541
work_keys_str_mv AT baeeunbit enhanceddichoticlisteningandtemporalsequencingabilityinearlyblindindividuals
AT janghyunsook enhanceddichoticlisteningandtemporalsequencingabilityinearlyblindindividuals
AT shimhyunjoon enhanceddichoticlisteningandtemporalsequencingabilityinearlyblindindividuals