High temporal resolution imaging of spatial working memory

Jared X. Van Snellenberg; Jennifer Whitman; John J. McDonald; Mario Liotti

doi:10.1016/j.ics.2007.02.037

High temporal resolution imaging of spatial working memory

Jared X. Van Snellenberg
, Jennifer Whitman
, John J. McDonald
, Mario Liotti

Psychiatry

Simon Fraser University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A substantial literature examining the neural correlates of working memory using functional magnetic resonance imaging (fMRI) has revealed the involvement of a predominantly fronto-parietal network in the maintenance and manipulation of information in working memory. However, the temporal dynamics of activity in this system cannot be revealed by fMRI at the sub-second level. We employed magnetoencephalography (n = 12) to investigate the temporal dynamics of spatial working memory in a well-studied task, the n-back. Dynamic imaging of coherent sources (beamforming) was employed to determine the sources of effects evident in temporal spectral evolution analyses. Results indicated the involvement of brain regions traditionally identified in fMRI, predominantly in the beta frequency range 500-1500 ms post-stimulus.

Original language	English
Pages (from-to)	433-436
Number of pages	4
Journal	International Congress Series
Volume	1300
DOIs	https://doi.org/10.1016/j.ics.2007.02.037
State	Published - Jun 2007

Keywords

Beamforming
Magnetoencephalography
Neuroimaging
Working memory

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10.1016/j.ics.2007.02.037

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title = "High temporal resolution imaging of spatial working memory",

abstract = "A substantial literature examining the neural correlates of working memory using functional magnetic resonance imaging (fMRI) has revealed the involvement of a predominantly fronto-parietal network in the maintenance and manipulation of information in working memory. However, the temporal dynamics of activity in this system cannot be revealed by fMRI at the sub-second level. We employed magnetoencephalography (n = 12) to investigate the temporal dynamics of spatial working memory in a well-studied task, the n-back. Dynamic imaging of coherent sources (beamforming) was employed to determine the sources of effects evident in temporal spectral evolution analyses. Results indicated the involvement of brain regions traditionally identified in fMRI, predominantly in the beta frequency range 500-1500 ms post-stimulus.",

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AU - Whitman, Jennifer

AU - McDonald, John J.

AU - Liotti, Mario

PY - 2007/6

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N2 - A substantial literature examining the neural correlates of working memory using functional magnetic resonance imaging (fMRI) has revealed the involvement of a predominantly fronto-parietal network in the maintenance and manipulation of information in working memory. However, the temporal dynamics of activity in this system cannot be revealed by fMRI at the sub-second level. We employed magnetoencephalography (n = 12) to investigate the temporal dynamics of spatial working memory in a well-studied task, the n-back. Dynamic imaging of coherent sources (beamforming) was employed to determine the sources of effects evident in temporal spectral evolution analyses. Results indicated the involvement of brain regions traditionally identified in fMRI, predominantly in the beta frequency range 500-1500 ms post-stimulus.

AB - A substantial literature examining the neural correlates of working memory using functional magnetic resonance imaging (fMRI) has revealed the involvement of a predominantly fronto-parietal network in the maintenance and manipulation of information in working memory. However, the temporal dynamics of activity in this system cannot be revealed by fMRI at the sub-second level. We employed magnetoencephalography (n = 12) to investigate the temporal dynamics of spatial working memory in a well-studied task, the n-back. Dynamic imaging of coherent sources (beamforming) was employed to determine the sources of effects evident in temporal spectral evolution analyses. Results indicated the involvement of brain regions traditionally identified in fMRI, predominantly in the beta frequency range 500-1500 ms post-stimulus.

KW - Beamforming

KW - Magnetoencephalography

KW - Neuroimaging

KW - Working memory

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SN - 0531-5131

VL - 1300

SP - 433

EP - 436

JO - International Congress Series

JF - International Congress Series

ER -

High temporal resolution imaging of spatial working memory

Abstract

Keywords

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