Validating an image-based fNIRS approach with fMRI and a working memory task

Sobanawartiny Wijeakumar; Theodore J Huppert; Vincent A Magnotta; Aaron T Buss; John P Spencer

doi:10.1016/j.neuroimage.2016.12.007

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Validating an image-based fNIRS approach with fMRI and a working memory task

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Validating an image-based fNIRS approach with fMRI and a working memory task

Sobanawartiny Wijeakumar, Theodore J Huppert, Vincent A Magnotta, Aaron T Buss and John P Spencer

NeuroImage (Orlando, Fla.), Vol.147, pp.204-218

02/15/2017

DOI: 10.1016/j.neuroimage.2016.12.007

PMID: 27939793

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https://ueaeprints.uea.ac.uk/id/eprint/61705/4/Accepted_manuscript.pdfView

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Abstract

In the current study, we extend a previous methodological pipeline by adding a novel image reconstruction approach to move functional near-infrared (fNIRS) signals from channel-space on the surface of the head to voxel-space within the brain volume. We validate this methodology by comparing voxel-wise fNIRS results to functional magnetic resonance imaging (fMRI) results from a visual working memory (VWM) task using two approaches. In the first approach, significant voxel-wise correlations were observed between fNIRS and fMRI measures for all experimental conditions across brain regions in the fronto-parieto-temporal cortices. In the second approach, we conducted separate multi-factorial ANOVAs on fNIRS and fMRI measures and then examined the correspondence between main and interaction effects within common regions of interest. Both fMRI and fNIRS showed similar trends in activation within the VWM network when the number of items held in working memory increases. These results validate the image-based fNIRS approach.\n•Novel image reconstruction technique was validated by simultaneously measuring brain activity with fNIRS and fMRI.•Both modalities show positive and negative correlations across visual working memory conditions.•Both modalities show similar trends in activation in response to increases in working memory load.

Functional magnetic resonance imaging

Visual working memory

Working memory load

Functional near-infrared spectroscopy

Image reconstruction

Details

Title: Subtitle: Validating an image-based fNIRS approach with fMRI and a working memory task
Creators: Sobanawartiny Wijeakumar - School of Psychology, University of East Anglia, Norwich NR4 7TJ, United Kingdom
Theodore J Huppert - Department of Radiology, University of Pittsburgh, Pittsburgh, PA 15213, USA
Vincent A Magnotta - Department of Radiology, University of Iowa, IA 52242, USA
Aaron T Buss - University of Tennessee, Department of Psychology, Knoxville, TN 37996, USA
John P Spencer - School of Psychology, University of East Anglia, Norwich NR4 7TJ, United Kingdom
Resource Type: Journal article
Publication Details: NeuroImage (Orlando, Fla.), Vol.147, pp.204-218
DOI: 10.1016/j.neuroimage.2016.12.007
PMID: 27939793
NLM abbreviation: Neuroimage
ISSN: 1053-8119
eISSN: 1095-9572
Publisher: Elsevier Inc
Grant note: name: NSF, award: BCS1029082
Language: English
Date published: 02/15/2017
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Radiology; Psychiatry; Psychological and Brain Sciences; Iowa Neuroscience Institute
Record Identifier: 9984066383102771

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