The depth-psychology corpus treats ‘sensory’ not as a peripheral topic in perceptual physiology but as a foundational category through which psyche, soma, and environment are continuously negotiated. At one pole, somatic therapists such as Ogden, Levine, and Rothschild position sensory processing — particularly exteroceptive and proprioceptive input — as the primary medium through which traumatic experience is encoded, perpetuated, and ultimately resolved. Sensory perceptions, on this account, can dominate rational cognition, and peritraumatic sensory distortions constitute a distinct clinical target. At a second pole, neurobiologists including Damasio, Craig, and Siegel map the sensory apparatus as the scaffolding upon which consciousness, interoception, and affective meaning-making are built: sensory input from all modalities is unified through thalamic relay and cortical mapping into coherent representations of self and world. Kandel extends this into memory science, demonstrating that sensory systems share a common topographic logic across the brain. A third, less prominent stream — represented by Moore and the classical philosophical tradition through Lorenz and Plato — argues that fully realised psychic imagery is inherently synaesthetic, irreducible to any single sensory channel. Across these positions, the corpus consistently refuses a passive, input-output model: sensory processing is predictive, affectively weighted, developmentally shaped, and therapeutically malleable.