13 Arousal & Orgasm - Setting the scene for arousal....

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Setting the scene for arousal. Time of day? Place? Smells? Sounds? Talk? No talk? Quickie? All the time in the world? What’s going to do it for you? SEXUAL AROUSAL Direct genital stimulation produces physical arousal without much brain involvement (we knew that). Other senses take erotic input upstairs; cells fire in the cerebral cortex ; input is translated: "turn-on" or "turn-off". Cells in the cerebral cortex transmit messages via the spinal cord that send blood rushing to the genitals - causing erection or lubrication . CEREBRAL CORTEX: Our sense of "self" resides here, too, and judges what we are doing as right or wrong. See where confusion can occur SUBCORTEX: includes cerebellum (regulates body movements), medulla oblongata (“breathin’ & beatin’) the pons (regulates sleep cycle) and the diencephalon (numerous functions, including regulation of emotions): thalamus and hypothalamus. THALAMUS: relays sensory info to cortex HYPOTHALAMUS: primary activator of the ANS (autonomic nervous system)
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sexual behavior) is also directly involved in erection and ejaculation, though we're not entirely sure how. Electrical stimulation in limbic system of non-humans can trigger sexual behaviors (mounting, masturbation, erection, even ejaculation without erection) RAS (reticular activating system): a network of nerves that carries messages perceived by higher awareness systems out to the limbs, and conversely. Thus, something we see or smell or feel can result in physiological arousal. SES & SIS & Your Erotic Imagination Look up the work of Bancroft & Janssen. Sexual arousal requires a balance of excitatory and inhibitory responses. Personality (“hard-wiring”); psychology; past experience; attitudes & beliefs – all these contribute to vast individual differences. While much attention has been paid to excitatory systems (SES), much less has been paid to inhibitory systems (SIS). Physiological and otherwise. SES includes arousal stemming from social interactions, visual stimuli, fantasies, and nonsexual situations. “When an attractive person flirts with me, I easily become sexually aroused.” “When I see others engaged in sexual activity, I feel like having sex.” SIS1 focuses on inhibition due to performance failure. “I am afraid I might lose my erection.” “I doubt I’m going to be able to come.” SIS2 on inhibition due to potential consequences of sex. “We could get caught.” “I could catch some STD.” Janssen and friends identify four adaptive purposes for inhibition of sexual response: 1. When the sexual situation contains a threat. 2. When there is a nonsexual threat that demands focused attention.
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13 Arousal & Orgasm - Setting the scene for arousal....

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