The Government of Canada has some in depth information about the impact of trauma on adult sexual assault survivors.
Neurobiological Effects of Trauma
↑ Increase
- Size of amygdala (increased fearfulness)
- Nervous system (fight/flight/freeze)
- Startles easily
- Stress hormones
- Inflammation
- Blood pressure and heart rate
- Weight gain
- Trembling/shaking
- Takes less stress to trigger a stress response
↓ Decrease
- Learning and memory
- Smaller, fewer connections, less integration
- Cortex/brain volume (smaller brain)
- Short-term memory
- Verbal recall
- Nervous system (calming system)
- Ability to form social connections
- Ability to regulate mood and affect