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. 2022 Feb 1;298(Pt B):57-67.
doi: 10.1016/j.jad.2021.10.104. Epub 2021 Nov 17.

Neurocognition after motor vehicle collision and adverse post-traumatic neuropsychiatric sequelae within 8 weeks: Initial findings from the AURORA study

Affiliations

Neurocognition after motor vehicle collision and adverse post-traumatic neuropsychiatric sequelae within 8 weeks: Initial findings from the AURORA study

Laura T Germine et al. J Affect Disord. .

Abstract

Background: Previous work has indicated that differences in neurocognitive functioning may predict the development of adverse post-traumatic neuropsychiatric sequelae (APNS). Such differences may be vulnerability factors or simply correlates of APNS-related symptoms. Longitudinal studies that measure neurocognitive functioning at the time of trauma are needed to determine whether such differences precede the development of APNS.

Methods: Here, we present findings from a subsample of 666 ambulatory patients from the AURORA (Advancing Understanding of RecOvery afteR trumA) study. All patients presented to EDs after a motor vehicle collision (MVC). We examined associations of neurocognitive test performance shortly after MVC with peritraumatic symptoms in the ED and APNS (depression, post-traumatic stress, post-concussive symptoms, and pain) 2 weeks and 8 weeks later. Neurocognitive tests assessed processing speed, attention, verbal reasoning, memory, and social perception.

Results: Distress in the ED was associated with poorer processing speed and short-term memory. Poorer short-term memory was also associated with depression at 2 weeks post-MVC, even after controlling for peritraumatic distress. Finally, higher vocabulary scores were associated with pain 2 weeks post-MVC.

Limitations: Self-selection biases among those who present to the ED and enroll in the study limit generalizability. Also, it is not clear whether observed neurocognitive differences predate MVC exposure or arise in the immediate aftermath of MVC exposure.

Conclusions: Our results suggest that processing speed and short-term memory may be useful predictors of trauma-related characteristics and the development of some APNS, making such measures clinically-relevant for identifying at-risk individuals.

Keywords: Cognition; Digital cognitive assessment; Digital neuropsychology; Longitudinal; Neuropsychology; Trauma.

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Figures

Fig. 1.
Fig. 1.. Measures of Neurocognitive Performance.
Performance-based neurocognitive assessments are administered in the Emergency Dept and 48 h after discharge. Tasks with blue shaded headings are administered three more times across the one-year duration of the AURORA study. The table gives polychoric correlations in the N = 666 person analytic sample, based on scores standardized to a mean of 0 and SD of 1. Factor loadings are given for two factors derived from exploratory factor analysis of neurocognitive data. Major outcomes measures from each task that are used in all analyses are indicated. For all measures, RT refers to reaction time and ACC refers to accuracy based on proportion correct. LnK (delay discounting) is the natural log of the hyperbolic discounting parameter, k, where higher scores reflect greater temporal discounting, or a preference for a smaller immediate reward. Dprime is a signal detection measure that reflects how well the participant was able to discriminate and accurately respond in the task. LogB is a signal detection measure of bias that reflects the tendency to select a rewarded response over a nonrewarded response, where higher scores indicate greater response bias to the rewarded response. Span is the number of digits the participant can accurately recall on at least one of two trials for each sequence length.

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