This article consists of a theoretical research on the biological notion in psychoanalysis starting from the bibliographical revision of Freud, Laplanche and Lacan. Our proposal is to map some relevant issues concerning the insertion of the biological notion in Freud's theorizations while seeking to outline its difference in relation to Laplanche and Lacan. Thinking the drive as a concept in the boundary between the psychological and the somatic, Freud establishes the supporting theory, conceiving the sexuality as an eminently intrapsychic process derived from the biological order. Laplanche follows Freud and the supporting theory although emphasizing the importance of intersubjectivity, placing the Other as a catalytic agent for the drive. Lacan on the other hand criticizes the supporting theory, pointing out a radical split between the biological and the sexual, hence defining satisfaction as pertaining to the order of partiality.
psychoanalysis; biological; drive; sexuality