Disruption of temporally extended self-memory system following traumatic brain injury (original) (raw)
2015, Neuropsychologia
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 fu...
Related papers
Episodic memory and the self in a case of isolated retrograde amnesia.
1998
Summary Isolated retrograde amnesia is defined as impaired recollection of experiences pre-dating brain injury with relatively preserved anterograde learning and memory. We present findings from a patient (ML) with isolated retrograde amnesia following severe traumatic brain injury (TBI) that address hypotheses of the interrelationships of focal neuropathology, episodic memory and the self.
Effect of Cognitive Demand on Prospective Memory in Individuals with Traumatic Brain Injury
Brain Impairment, 2003
This study aimed to evaluate the influence of cognitive demand on prospective-memory in individuals with traumatic brain injury (TBI) using a dual-task paradigm. Fourteen individuals with severe TBI and 14 matched controls were required to undertake two tasks. A lexical-decision task was used as an ongoing task and had two levels of cognitive demand (viz., low and high). The event-based prospective-memory task involved performing a specific action whenever a target stimulus appeared during the ongoing task. The Letter-Number Sequencing Test, the Tower of London and the Controlled Oral Word Association Test were also administered to assess the relationship between prefrontal lobe functions and prospective memory. As hypothesised, participants in the TBI group performed more poorly than participants in the control group on the prospective-memory task in the high but not in the low demand condition. There were significant correlations between prospective-memory task performance and sco...
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.