Left Hemispheric Dominance During Auditory Processing in a Noisy Environment

Overview

Journal BMC Biol

Publisher Biomed Central

Specialty Biology

Date 2007 Nov 17

PMID 18005401

Citations 9

Authors

Hidehiko Okamoto

Henning Stracke

Bernhard Ross

Ryusuke Kakigi

Christo Pantev

Affiliations

Soon will be listed here.

Abstract

Background: In daily life, we are exposed to different sound inputs simultaneously. During neural encoding in the auditory pathway, neural activities elicited by these different sounds interact with each other. In the present study, we investigated neural interactions elicited by masker and amplitude-modulated test stimulus in primary and non-primary human auditory cortex during ipsi-lateral and contra-lateral masking by means of magnetoencephalography (MEG).

Results: We observed significant decrements of auditory evoked responses and a significant inter-hemispheric difference for the N1m response during both ipsi- and contra-lateral masking.

Conclusion: The decrements of auditory evoked neural activities during simultaneous masking can be explained by neural interactions evoked by masker and test stimulus in peripheral and central auditory systems. The inter-hemispheric differences of N1m decrements during ipsi- and contra-lateral masking reflect a basic hemispheric specialization contributing to the processing of complex auditory stimuli such as speech signals in noisy environments.

Citing Articles

The Effect of Simultaneous Contralateral White Noise Masking on Cortical Auditory Evoked Potentials Elicited by Speech Stimuli.

Felix L, Menezes P, Oliveira L, Batista C, Carnauba A, Andrade K Int Arch Otorhinolaryngol. 2024; 28(1):e115-e121.

PMID: 38322432 PMC: 10843931. DOI: 10.1055/s-0043-1767675.

Frequency and Time Domain Analysis of EEG Based Auditory Evoked Potentials to Detect Binaural Hearing in Noise.

Ignatious E, Azam S, Jonkman M, De Boer F J Clin Med. 2023; 12(13).

PMID: 37445522 PMC: 10342578. DOI: 10.3390/jcm12134487.

'Like going into a chocolate shop, blindfolded': What do people with primary progressive aphasia want from speech and language therapy?.

Loizidou M, Brotherhood E, Harding E, Crutch S, Warren J, Hardy C Int J Lang Commun Disord. 2022; 58(3):737-755.

PMID: 36448629 PMC: 10947572. DOI: 10.1111/1460-6984.12818.

Catching-up: Children with developmental coordination disorder compared to healthy children before and after sensorimotor therapy.

Niklasson M, Norlander T, Niklasson I, Rasmussen P PLoS One. 2017; 12(10):e0186126.

PMID: 29020061 PMC: 5636139. DOI: 10.1371/journal.pone.0186126.

Adults with sensorimotor disorders: enhanced physiological and psychological development following specific sensorimotor training.

Niklasson M, Rasmussen P, Niklasson I, Norlander T Front Psychol. 2015; 6:480.

PMID: 25954233 PMC: 4406001. DOI: 10.3389/fpsyg.2015.00480.

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