PTSD Flashcards
1
Q
What is tonic immobility?
A
profound but reversible motor inhibition (especially common if direct physical contact has occurred during the trauma)
2
Q
Describe what happens during tonic immobility.
A
reduced vocalization rigidity and paralysis chills muscle tremors Unresponsiveness to pain
3
Q
Where does brain activation shift from and to when threat occurs?
A
from prefrontal cortex to midbrain superior calliculi
4
Q
Define PTSD
A
deficiency in top down amygdala activation by the prefrontal cortex
5
Q
What happens to dopamine and cortisol in acute stress?
A
both have a dose dependent increase
6
Q
What happens to cortisol in PTSD?
A
decreases
