The term ‘Oscillatory Process’ enters the depth-psychology corpus along several converging trajectories, none of which is purely psychological in origin yet all of which bear directly on questions of psychic life, somatic experience, and therapeutic transformation. At the neurobiological register, Panksepp, Craig, and Carhart-Harris treat oscillatory processes as the substrate of perceptual binding, affective salience, and conscious moments — gamma bursts in the olfactory bulb, alpha cycles structuring interoceptive ‘quantal’ units, and DMN power fluctuations correlating with ego-dissolution. Thompson and Siegel extend this into coordination dynamics, where rhythmic interpersonal coupling overcomes intrinsic frequency differences to produce social synchrony. Simondon offers the most formally rigorous account, deriving oscillation from the interplay of unequal potential energies within a metastable system — a model whose resonance with psychic tension and individuation is not accidental. At the therapeutic pole, Levine’s concept of pendulation recasts oscillatory process as the innate rhythm of somatic contraction and expansion whose restoration constitutes the core of trauma resolution. McGilchrist situates neuronal oscillatory frequencies across hierarchically nested bands as the brain’s solution to the problem of combining sameness and difference, order and disorder. The central tension in the corpus runs between mechanistic and teleological readings: whether oscillation is merely a physical constraint or the very engine of meaning-making, transformation, and self-organization.