Disruption of temporally extended self-memory system following traumatic brain injury

Neuropsychologia
Cécile CostePascale Piolino

Abstract

We investigated for the first time the episodic/semantic distinction in remembering the past and imagining the future in traumatic brain injury (TBI), and explored cognitive mechanisms that may underlie their deficits. Fifteen severe TBI patients and 15 control participants performed a battery of neuropsychological tests and a set of verbal fluency tasks designed to assess semantic (personality traits knowledge and general events), and episodic (specific events and details) facets of self-representations according to three time periods (remote/retrograde past, recent/anterograde past, future). Compared to controls, TBI patients showed deficits in both semantic and episodic self-representations, regardless of the time period, and controlling for basic cognitive functions. By contrast, a subjective evaluation of self-concept measuring the degree of certitude and the valence of self did not differ between patients and controls. The deficits were mainly predicted by altered executive function (i.e., updating) for past periods, as well as by general semantic and feature binding in working memory for the future period, independently of the injury characteristics. For controls, only episodic self-representation for each time period wa...Continue Reading

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Citations

Jun 25, 2016·Journal of Neuropsychology·Katrine W Rasmussen, Dorthe Berntsen
Jan 18, 2017·The British Journal of Clinical Psychology·Giovanna MioniFranca Stablum
Dec 22, 2017·Journal of Neuropsychology·Suncica LahMichael Gascoigne
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Jun 10, 2020·Journal of Neuropsychology·Lucien RochatMartial Van der Linden

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Brain Injury & Trauma

brain injury after impact to the head is due to both immediate mechanical effects and delayed responses of neural tissues.