Hemispheric Lateralization of Auditory Working Memory Regions During Stochastic Resonance: An fMRI Study

Othman EA 1 , Yusoff AN 2 , Mohamad M 2 , Abdul Manan H 3 , Abd Hamid AI 4 , Giampietro V 5

Affiliations 

  • 1 Department of Medical Imaging, Faculty of Health Sciences, Universiti Sultan Zainal Abidin, Kuala Terengganu, Malaysia
  • 2 Centre for Health and Applied Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
  • 3 Department of Radiology, Universiti Kebangsaan Malaysia Medical Centre, Kuala Lumpur, Malaysia
  • 4 Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kelantan, Malaysia
  • 5 Department of Neuroimaging, Institute of Psychiatry, Psychology & Neuroscience, King's College London, UK
J Magn Reson Imaging, 2020 06;51(6):1821-1828.
PMID: 31794119 DOI: 10.1002/jmri.27016

Abstract

BACKGROUND: The auditory and prefrontal cortex supports auditory working memory processing. Many neuroimaging studies have shown hemispheric lateralization of auditory working memory brain regions in the presence of background noise, but few studies have focused on the lateralization of these regions during stochastic resonance.

PURPOSE: To investigate the effects of stochastic resonance on lateralization of auditory working memory regions, and also to examine the brain-behavior relationship during stochastic resonance.

STUDY TYPE: Cross-sectional.

POPULATION/SUBJECTS: Forty healthy young adults (18-24 years old).

FIELD STRENGTH/SEQUENCE: 3.0T, T1 , and T2 *-weighted imaging.

ASSESSMENT: The auditory working memory performance was assessed using a backward recall task. Functional magnetic resonance imaging (fMRI) was used to measure brain activity during task performance. Functional MRI data were analyzed using SPM12 and WFU PickAtlas.

STATISTICAL TESTS: One-way independent analyses of variance (ANOVA) were conducted on the behavioral and functional data to examine the main effect of noise level on performance (P 

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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