A theory of signs is presented to arrive at a model of mind that provides a
smooth transition from inanimate matter to the thinking brain. Principles
of information theory and semiotics are invoked to create a conceptual sche
me that can contribute to an understanding of the "mind-body problem." The
thesis is pursued that in living systems, as opposed to inorganic ones, the
re occurs the phenomenon of semiotic transmission of information. The resul
t is a "dualistic-materialist" position; the dualism arises from the fact t
hat at the beginning of life a set of processes comes into being different
from those of the inorganic world. This model has implications for psycholo
gy and psychoanalysis. It allows for semiotic systems at different levels-e
.g., the molecular, the neural network, the language system, and higher men
tal functions-to be integrated. Analytic concepts such as free association,
clinical technique, feedback systems, personality structure, transference,
and repetition compulsions can be understood in both biological and semiot
ic terms. This model interdigitates with linguistic studies already done in
psychoanalysis, as well as with biological models extrinsic to the field.