Alignment—the empathic matching of one’s own state to that of another Siegel (1999)—is a sensorimotor event that promotes social engagement communicated through prosody, voice tone and volume, touch, expression, pace, gestures
Ogden defines alignment as a bodily, sensorimotor form of attunement in which the therapist or caregiver matches internal states with the other, constituting the neurobiological substrate of social engagement and regulatory co-regulation.
, Trauma and the Body: A Sensorimotor Approach to Psychotherapy, 2006thesis