Cited by 476Traumatic Brain Injury ResearchCognitive Functions and MemoryTraumatic Brain Injury and Neurovascular Disturbances

Brain activation during working memory 1 month after mild traumatic brain injury: A functional MRI study

McAllister, T.W., Saykin, A.J., Flashman, L.A., Sparling, M.B., Johnson, S.C., Guerin, S.J., Mamourian, A.C., Weaver, J.B. +1 more·1999·Neurology

Abstract

OBJECTIVE: To assess patterns of regional brain activation in response to varying working memory loads shortly after mild traumatic brain injury (MTBI). BACKGROUND: Many individuals complain of memory difficulty shortly after MTBI. Memory performance in these individuals can be normal despite these complaints. METHODS: Brain activation patterns in response to a working memory task (auditory n-back) were assessed with functional MRI in 12 MTBI patients within 1 month of their injury and in 11 healthy control subjects. RESULTS: Brain activation patterns differed between MTBI patients and control subjects in response to increasing working memory processing loads. Maximum intensity projections of statistical parametric maps in control subjects showed bifrontal and biparietal activation in response to a low processing load, with little additional increase in activation associated with the high load task. MTBI patients showed some activation during the low processing load task but significantly increased activation during the high load condition, particularly in the right parietal and right dorsolateral frontal regions. Task performance did not differ significantly between groups. CONCLUSION: MTBI patients differed from control subjects in activation pattern of working memory circuitry in response to different processing loads, despite similar task performance. This suggests that injury-related changes in ability to activate or to modulate working memory processing resources may underlie some of the memory complaints after MTBI.

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Registry

Crossref · 10.1212/wnl.53.6.1300

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17 of 17 references verified0 citation errors · 0 not checkable

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  • Abnormal brain activation patterns after mTBI can remain for months after injury, despite normal neurocognitive task performance.

    “These abnormal brain activation patterns can remain for months after injury, despite normal neurocognitive task performance [115, 122].”

    From The neuropathology of sport (2014) · cites this paper as [122]

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Authors
McAllister, T. W., Saykin, A. J., Flashman, L. A., Sparling, M. B., Johnson, S. C., Guerin, S. J., Mamourian, A. C., Weaver, J. B., & Yanofsky, N.
Affiliations
Dartmouth–Hitchcock Medical Center (US)
Venue
Neurology
Published
1999-10
Volume
53
Issue
6
Pages
1300-1300
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W2080224340
Cited by
476
References
17
Citations by year
2026: 7 · 2025: 10 · 2024: 3 · 2023: 6 · 2022: 11 · 2021: 15 · 2020: 14 · 2019: 18 · 2018: 15 · 2017: 16 · 2016: 22 · 2015: 26 · 2014: 27 · 2013: 21 · 2012: 28
FWCI
7.37
Type
journal article
Language
en
Open access
closed
Locations
  • Neurology (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Public Health Service (H133G70031)
Topics
  • Health Sciences › Medicine › Epidemiology › Traumatic Brain Injury Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Functions and Memory
  • Health Sciences › Medicine › Neurology › Traumatic Brain Injury and Neurovascular Disturbances
Keywords
mild traumatic brain injury, working memory, brain activation, auditory n-back task, processing load, memory impairment, right parietal cortex, dorsolateral prefrontal cortex, post-concussion syndrome
MeSH terms
Adult, Brain, Brain Injuries, Brain Mapping, Female, Humans, Magnetic Resonance Imaging, Male, Memory, Neuropsychological Tests, Prospective Studies, Task Performance and Analysis

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