High Arousal (Autonomic Nervous System)

refers to “arousal that approaches, or is slightly over, the upper edge of the window of tolerance” (Ogden & Fisher, 2015, p. 774)

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Reference

Ogden, P. & Fisher, J. (2015). Sensorimotor Psychotherapy: Interventions for Trauma and Attachment. W.W. Norton & Company: New York.