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It is typical for visual memory to remain intact, while verbal memory does not. This may explain why verbal trauma narratives are often disorganized, incoherent, or fragmented. While completing declarative verbal memory tasks, some individuals with PTSD illustrated anterograde memory difficulties and low encoding and storage.
PTSD affects the verbal memory of the traumatic event, but does not affect the memory in general. [41] One of the ways traumatic stress affects individuals is that the traumatic event tends to disrupt the stream of memories people obtain through life, creating memories that do not blend in with the rest.
Intense psychological stress caused by unwanted, troublesome memories can cause brain structures such as the amygdala, hippocampus and frontal cortex to become activated, as they process the memory. Related to this, there is some neuroimaging evidence that those who are susceptible to PTSD have a hippocampus with a reduced size. [4]
The fact that sleep deprivation thus appears to affect the ability to suppress intrusive memories and possibly other intrusive thoughts could have important implications for mood disorders like ...
This theory suggests that the VAM system is impaired during a traumatic event because conscious attention is narrowly drawn to threat-related information. Therefore, memory of the trauma is heavily focused on fear, which affects information processing. This gives rise to PTSD symptoms such as trauma-related cognitions, appraisals, and emotions.
Post-traumatic stress disorder (PTSD) [b] is a mental and behavioral disorder [8] that develops from experiencing a traumatic event, such as sexual assault, domestic violence, child abuse, warfare and its associated traumas, natural disaster, traffic collision, or other threats on a person's life or well-being.
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