PSY 338 Lecture Notes - Lecture 10: Default Mode Network, Play Therapy, Precuneus
1 Apr 2020
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Document Summary
Alterations in default network connectivity in ptsd related to early-life trauma. During rest in healthy controls, the activity was correlated with a set of regions implicated in the default network, including the mpfc, lateral parietal cortices, inferior and middle temporal cortices, thalamus and cerebellum. There was a greater positive functional connectivity of the posterior cingulate cortex with the precuneus, mpfc and bilateral lateral parietal cortex among healthy controls. The association of the default mode network with self-reflection and self-monitoring may suggest that differences in this activity in trauma exposed individuals may explain dissociative symptoms in patients with ptsd. Researchers have discovered that unlike positive memories, trauma memories are stored on the right side on the brain. Since the right hemisphere of the brain has a more direct link to the limbic, the emotions which are connected to those memories are more intense and trigger a higher degree of distress.
