Proprioception occupies a pivotal position within the depth-psychology and embodied-cognition corpus, functioning simultaneously as a neurophysiological datum, a phenomenological category, and a philosophical crux. Gallagher’s sustained investigation in *How the Body Shapes the Mind* establishes the central tension: proprioception must be distinguished between proprioceptive information (PI), a subpersonal, non-conscious mechanism regulating posture and movement, and proprioceptive awareness (PA), an experiential dimension bearing on self-identity and the differentiation of self from non-self. This distinction is not merely taxonomic; it redraws the terrain of embodied cognition. Sacks’s clinical narratives — most vividly in the case of Christina, the ‘Disembodied Lady’ — render viscerally legible what proprioceptive loss entails for personhood, demonstrating that the sense is rightly called ‘the eyes of the body.’ Levine extends proprioception into trauma theory, arguing it constitutes our most intimate self-knowledge. Fogel connects proprioceptive neuroanatomy to developmental body-schema formation, emphasizing its role in therapeutic reconstruction. Damasio distinguishes proprioception from interoception, assigning it to exteroceptive somatosensory cortex rather than insular processing. Together these voices reveal proprioception as neither purely mechanical nor purely phenomenal, but the hinge upon which body schema, bodily self-consciousness, ecological agency, and psychological integrity all turn.