The depth-psychology corpus treats ‘catatonic’ primarily as a clinical-phenomenological category within the schizophrenia literature, with Bleuler’s 1911 monograph providing the foundational and most exhaustive treatment. For Bleuler, catatonia names not a discrete disease (as Kahlbaum originally proposed) but a symptomatic constellation — stupor, catalepsy, stereotypy, verbigeration, negativism, impulsive agitation — that emerges within the broader schizophrenic dissociation of psychic functions. Critically, Bleuler argues that catatonic motor phenomena are psychogenically grounded: they express unconsciously operating complexes, autistic withdrawal, blocking, and the influence of split-off personality fragments rather than primary neurological lesions. This interpretive move connects catatonia to the core depth-psychological concern with the unconscious determinants of visible behaviour. Jung’s association-experiment work touches the syndrome diagnostically, while Rank’s psychoanalytic reading locates catatonic stupor within birth-trauma symbolism. Levine, writing from a somatic trauma perspective, recasts catatonic immobility as a phylogenetically conserved freeze response — the human analogue of tonic immobility in prey animals — whose termination carries explosive, dissociated energy. Across these positions, a persistent tension obtains between organic-neurological and psychodynamic accounts of catatonic phenomena, a tension Bleuler himself refuses to dissolve.