Defensive Freezing and the Evolutionary Origins of Meditation in Humans.

The biological origins of meditation in humans remain underexplored, despite extensive scholarship on its cultural history and health effects. We present a theoretical account that traces the origins of meditation to the evolutionarily conserved repertoire of defensive freezing. We propose that this ancient survival response-characterized by motoric immobility, heightened vigilance with narrowed attentional focus, and bradycardia-provided a behavioral, neural, and physiological substrate upon which operant and social reinforcement could act. Over evolutionary time, these response components may have been co-opted and selectively reinforced within early human social communities, giving rise to complex, structured behavioral repertoires resembling modern sitting and slow-movement meditative practices embedded within various cultural systems of teaching. Rather than viewing meditation as a human psychological innovation, we suggest it represents a culturally refined expression of an ancestral survival strategy, maintained and elaborated through reinforcement, mimicry, and verbal instruction, spanning the late Paleolithic era (approximately 150,000-200,000 years before present) to the present day. This framework recasts meditation as an evolved modulation of a more basic stress- and threat-related freezing response template, shaped and maintained through social reinforcement.