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Efficacy of a repeat testing protocol for cognitive fatigue assessment: a preliminary study in postconcussive
Thomas F Rau1,1, Sarjubhai A Patel1,1, Erik E Guzik2,2
1The Neural Injury Center, The University of Montana, 32 Campus Drive, Missoula, MT 59812, USA.
Aim:
A small but notable number of individuals who suffer a concussion report ongoing cognitive difficulties. This preliminary study investigated the efficacy of repetitive test application to discern cognitive impairment in those with ongoing symptoms.
Methods:
Participants (n = 17) with continuing self-reported symptoms following a concussion (∼9 months postinjury) were compared with 17 age group matched controls for working memory and word-list learning.
Results:
Both groups performed similarly after the first trial for both assessments. However, in subsequent trials, the postconcussion group performed significantly worse than controls.
Discussion:
While further studies to understand the mechanisms are warranted, data from this preliminary study suggest that a repetitive test application may be useful to discern cognitive fatigue in individuals who report ongoing concerns following a concussion.
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