After a review of the pertinent literature, and with the aid of many clinical examples, Silverman discusses aspects of ego functioning which occur during the analytic hour and which are related to bodily reactions. These aspects use mainly aggressive energies and are of the following types: 1, habitual ego-syntonic physical responses which are part of character structure; 2, (a) transference resistance somatically expressed; (b) somatic reactions to interpretation; and 3, shifts between somatic and psychic modes of expression. These are all subject to modification with interpretation and working through. The appearance and disappearance of somatic responses during an analytic hour need not represent any important regressive or synthetic ego elements but rather the usual homeostatic activities. The somatic reactions tend to have a symbolic meaning and are continuations of functions proper to the first year of life when emotional disturbances tend to be expressed in somatic terms. Excessive bodily reactions may denote marked regressive changes in ego functioning and lead to organic disease.