The presenter will use her own experience of 200-250 spontaneous intrauterine regressions achieved in an uninterrupted period of 7 years (2 hours therapy sessions a week during 5 years) to show how we reach this type of experience in Psycho-Corporal Integration. She will use the theoretical references of the founder of this system Marc Costa who has been her therapist and teacher for this journey. We basically try to bring the therapy to a place where "somato-psychic" experiences take over psychosomatic ones. We do this by gradually "dialoging" with the different stratums of the caracter and "navigating" through the intrapsychic conflicts and its defensive layers in a synchronic way between the 4 parts of the psychosomatic apparatus. The psychosomatic apparatus is divided in 4 parts: two somatic ones: physiological-vegetative and skeletal-muscular and two psychic ones: instinctive-emotional and mental-cognitive.