Conclusions: These results suggest a global impairment in PS memory across lifetime periods particularly during PTA, but still present within 2 weeks of emergence from PTA. Lower overall PS memory scores during PTA were associated with increased days to emerge from PTA post-interview. The TBI group was still impaired relative to HCs following emergence from PTA. Results: PS memory was significantly lower during PTA than post-emergence from PTA, with no relative preservation of remote memories. Analysis of variance was used to compare the gradient across lifetime periods during PTA relative to post-emergence, and between groups. The TBI group was assessed once during PTA and post-emergence. Methods: Twenty patients with moderate-severe TBI and 20 healthy controls (HCs) were administered the Personal Semantic Schedule of the Autobiographical Memory Interview.

This study used a repeated-measures design to examine the pattern of personal semantic (PS) memory performance during PTA and within two weeks of emergence to improve understanding of the nature of the memory deficit during PTA and its relationship with recovery. However, there has been limited empirical research investigating whether a negative gradient in retrograde amnesia - relative preservation of remote over recent memory - exists during post-traumatic amnesia (PTA) compared with the acute phase post-emergence. Objectives: Anecdotal reports suggest that following traumatic brain injury (TBI) retrograde memories are initially impaired and recover in order of remoteness.

Anterograde vs retrograde amnesia