Arousal (Autonomic Nervous System)
refers to “the degree of activation of the autonomic nervous system such as based on neuroception of safeness or of threat” (Ogden & Fisher, 2015, p. 773).
Ogden, P. & Fisher, J. (2015). Sensorimotor Psychotherapy: Interventions for Trauma and Attachment. W.W. Norton & Company: New York.