[Study 1] Summary
When an emotional reaction occurs, stress hormones (cortisol, norepinephrine) are released which leads to increased activation of the amygdala.
Amygdala has strong connections with hippocampus and the activation with stress hormones increases activity in the hippocampus thereby facilitating memory consolidation for emotional events. Seen in neuroimaging studies. Patients with damage to amygdala show no generated effect.
[Study 1] Episodic Memory
Long term retention of contextually rich representations of past experiences. (Spatial, temporal, context.) Our memories are episodic in nature.
[Study 1] Sleep's Role in Memory
REM phase is important for modulatory effects on emotional memory. Amygdala and hippocampus are more active during REM. Sleep benefits emotional relative to neutral memories. Sleep consolidates the memory and transforms it to make it less accurate sometimes.
[Study 1] Qualitative Changes in Memory
Periods of sleep effect consolidation. You have to bind together features to remember an event.
[Study 2A] Sleep Paralysis
When you wake up and can't move your body in the midst of REM sleep. Can be accompanied by hypopompic hallucinations between cognitive/perceptual aspects of sleep. You can think you're being abducted.
[Study 2A] Exploring Question of...
Sleep paralysis being studied with traumatic memory. Looking if people report memories of childhood sexual abuse and of abduction by space aliens.
[Study 2A] Result of Paralysis Study
Content was electric sensations, seeing aliens in bed room, lights, levitating. Shock and puzzlement began after first episodes. It's difficult to remember what you encountered.
[Study 2A] Purpose of Study
Test whether people who hear scripts of traumatic memories related to abduction would exhibit a profile of reactivity on measures of heart rate (HR) and skin conductance (SC) and facial electromyographic (EMG) activity similar seen my patients in previous PTSD research. Control subjects hardly responded to narratives. Responses to script were larger than responses of PTSD patients. PTSD symptoms can be encountered either way.
[Study 2B] Adults with CSA
Some adults see in your sleep a nocturnal return of dissociated fragments of incest memories.
[Study 2B] Purpose of Study
You can misinterpret episodes of sleep paralysis. Relative to participants denying paralysis those reporting it had significantly higher dissociation scores. When corrected for inequality of variances they had higher depression scores and marginally higher absorption scores.