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Chapter 6 Sexual Arousal and Response

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e.g. sexual fantasy. Limbic system affects feeling & behavior ... Sexual Response 'G' Spot. Grafenberg spot. Sometimes elusive area on lower front wall of vagina ... – PowerPoint PPT presentation

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Title: Chapter 6 Sexual Arousal and Response


1
Chapter 6Sexual Arousal and Response
2
Sexual Arousal
  • The role of hormones
  • Misleading to link specific hormones with males
    and females
  • androgens so called male sex hormones
  • Dominant androgen testosterone produced by
    testes, adrenal glands, ovaries
  • estrogens so called female sex hormones
  • produced by ovaries testes

3
Testosterone DeficiencyGeneral signs similar in
both sexes
  • Decrease in customary level of sexual desire
  • Reduced sensitivity of genitals and nipples to
    sexual stimulation
  • Overall reduction in general levels of sexual
    arousability, may be accompanied by decreased
    orgasmic capacity and/or less intense orgasms
  • Decreased energy levels and depressed mood
  • Increased fat mass
  • Decreased bone mineral density
  • Reduced body hair
  • Decreased muscle mass and strength

4
The Brain and Sexual Arousal
  • Cerebral cortex affects thinking
  • e.g. sexual fantasy
  • Limbic system affects feeling behavior
  • Brain also interprets sensory information
  • The senses
  • touch, see, smell, taste, hear

5
Touch
  • Touch is the dominant "sexual sense
  • Some areas more sensitive than others erogenous
    zones
  • Primary erogenous zones dense concentrations of
    nerve endings
  • Secondary erogenous zones areas of body endowed
    with erotic significance through sexual
    conditioning

6
Smell
  • Genital odors may be perceived arousing or
    offensive
  • obsession w/ masking natural odors in our society
    makes study of this topic difficult
  • May come to associate a particular smell with
    arousal

7
Taste
  • Appears to play relatively minor role in
  • human sexual arousal
  • Influenced by marketing for various products
  • Some have acquired an appreciation for the taste
    of sexual secretions

8
Hearing
  • A persons response to sexual sounds highly
    variable
  • Moans/orgasmic cries/intimate or erotic
    conversation

9
Aphrodisiacs Do they work?
  • Aphrodisiac substance that allegedly arouses
    sexual desire and increases capacity for sexual
    activity
  • Powerful placebo effect
  • selffulfilling prophecy
  • if ya think itll work, it probably will

10
Aphrodisiacs Do they work?
  • In certain Asian countries, ground up animal
    horns considered powerful sexual stimulants
  • Did you know thats where term horny arose?
  • Some drugs thought to have aphrodisiac qualities
    alcohol and yohimbine
  • See chart on page 156 for more info on drugs

11
Aphrodisiacs Do they work?
  • Yohimbine crystalline
  • alkaloid derived from sap of tropical
    evergreen
  • - yohimbine tree
  • Grows in West Africa
  • Appears to have genuine aphrodisiac
  • effects on rats

Yohimbine is becoming an unsustainable resource
for medicinal purposes
12
  • Anaphrodisiacs substances that inhibit sexual
    desire/behavior
  • Opiates decrease in sexual interest and activity
    in both sexes
  • Birth control pills commonly reduce sexual
    desire
  • Nicotine retards sexual motivation and function
  • (READ p 157 to learn of other anaphrodisiacs!)

13
Human Sexual Response
  • Kaplan's three-stage model
  • Desire as distinct, but not required
  • Excitement
  • Orgasm

Kaplan sees desire as distinct stage of sexual
response cycle separate from genital changes
14
Masters Johnson's 4 phases
  • Same for men and women
  • 2 Basic physiological reactions to sexual
    stimulation
  • vasocongestion blood engorges (fills) body
    tissues
  • myotonia increased muscle tension
  • Occurs throughout body during sexual arousal

15
Human Sexual Response
  • Masters Johnson's 4 phases
  • 1. Excitement
  • 1 minute to many hours
  • Sex flush
  • More common in women

16
Human Sexual Response
  • Masters Johnson's 4 phases
  • 2. Plateau - brief
  • Muscle tension, heart rate, blood pressure and
    vasocongestion increase

17
Human Sexual Response
  • Masters Johnson's 4 phases
  • 3. Orgasm
  • Shortest phase of sexual response cycle

18
Human Sexual Response
  • Masters Johnson's 4 phases
  • Resolution
  • Sexual systems return to their non-excited state
  • Refractory
  • a time when no amount of additional stimulation
    will result in orgasm

19
  • After orgasm, women are physiologically capable
    of returning to another orgasmic peak from
    anywhere in the resolution phase, if she so
    desires

20
Sexual Response G Spot
  • Grafenberg spot
  • Sometimes elusive area on lower front wall of
    vagina
  • Sensitive to pressure
  • Sometimes results in orgasm when vigorously
    stimulated

Locating the Grafenberg spot. Usually two fingers
are used, and it is often necessary to press
deeply into the anterior wall of the vagina to
reach the spot.
21
Internet Websites
  • Adult Sexual Advisor
  • http//www.realage.com/Connect/healthadvisor/adult
    health/crs/agevs.htm
  • Site documenting changes in arousal patterns for
    males and females as they age
  • Looking for that Brain Wave Called Love
  • http//www.skfriends.com/brain-wave-love.htm
  • New York Times article reviewing neurological
    underpinnings of sexual arousal
  • Electronic Journal of Human Sexuality
  • Found on college Info Trac College Edition
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