ANT211H5 Lecture Notes - Lecture 4: Sex Steroid, Sexual Differentiation, Maximum Capacity
Document Summary
Sexual stimulants, your response takes different responses. Psychosomatic circle idea that there is a relationship between environment sexual stimulus and the biological response that occurs from that stimulus. A lot of things we learn to be sexually stimulating and so for is learned. Central brain mechanisms: neural signals, peripheral sexual responses, excitory, inhibitory. Females: lordosis: under the influence of gonadal hormones, has organizing and activating function. Males: castrated at 1 day old no copulation, castrated after 1 week will copulate with testosterone in adulthood, do not have pelvic thrusting behavior even if they get their testosterone dosage, will have male normal copulating behavior. Given organizing and activating shots of testosterone lose capacity for lordosis; will exhibit male copulatory behavior: they have a behavior that appears like male ejaculation after a series of pelvic thrusting. Early testosterone influences neural organization underlying male copulation. Maximum capacity for sexual arousal & response. By 13yo in western countries, 93-96% are masturbating.
