sex disorders Flashcards
masters and johnson: excitement-plateau-orgasm-resolution model
Hock & Roger (2014)
The physiology of human sexual responding
Created to facilitate explanations of how our bodies change during sexual stimulation
Although largely influential, this model has still been criticized and not all of its conclusions hold up empirically - yet, their basic observations still hold ground
Although there is a lot of heterogeneity in the way we have sex, it’s form is relatively predictable across people, allowing for basic predictions of physical patterns of sexual response
4 phases of sexual response:
- Excitement
- Plateau
- Orgasm
- Resolution
It impossible to identify exactly when each phase begins and stops
masters and johnson: EPOR model
the stages in men vs women
Hock & Roger (2014)
The physiology of human sexual responding
The female response cycle tends to be more varied than that of a male → can have multiple orgasms without a refractory period
Men generally progress fairly predictably though the four stages and require some time between orgasm, called a refractory period, before another orgasm is possible
masters and johnson: EPOR model
the excitement phase
Hock & Roger (2014)
The physiology of human sexual responding
first physical changes of sexual arousal occur
Early arousal can occur from any type of pleasurable sexual stimulation - e.g., kissing, touching, sexually arousing visual material
Vasocongestion: for both sexes, blood begins to circulate into erectile structures throughout the body, causing them to expand and enlarge
- A sex flush / myotonia may occur = a reddening of the skin on the chest and abdomen, erect nipples, heavy breathing → secondary reactions to sexual arousal
For men: erection of the penis is the most obvious, first sign of sexual excitement
For women: first physical change is the erection of the clitoris - manifests through vaginal lubrication
masters and johnson: EPOR model
the plateau phase
Hock & Roger (2014)
The physiology of human sexual responding
Sexual arousal levels off (i.e., reaches a plateau) and remains at an elevated level of excitement
- When the plateau is reached, both men and women continue to be very aroused but do not experience much additional elevation in that arousal
For both sexes, erectile tissues are now fully engorged with blood
- Respiration, heart rate, blood pressure, and muscle tension are all at high levels as orgasm approaches
For women: erect nipples; reduced size of the vaginal opening + tenting (= the process of expansion of the inner two-thirds of the vagina
For men: the cowper’s glands have secreted enough pre-ejaculate fluid that it can be seen seen/felt
masters and johnson: EPOR model
the orgasmic phase
Hock & Roger (2014)
The physiology of human sexual responding
The climax of sexual arousal
Shortest of the 4 phases, usually lasting less than 15 seconds
women:
- Generally require a somewhat longer period of stimulation than men
- Capable of multiple orgasms, without a refractory period
- Moderators of orgasm: length of time since previous orgasm, substance use + comfort and intimacy with a partner
men:
- 2 stages of ejaculation
- stage 1: emission = semen builds up in the urethral bulb just prior to being expelled through the urethra → ejaculatory inevitability
- stage 2: expulsion = pushing the semen through the urethra and out of the penis
For both genders there is an increase in respiration and heart rate + loss of control over some voluntary muscles resulting in contractions and spasms
female ejaculation debate: do some women truly ejaculate upon orgasm?
what does the female ejaculate consist of?
- skene’s glands: in females, a pair of glands on either side of the urethra that in some women may produce a fluid that is expelled during orgasm
g-spot controversy: debated whether it exists, but research mostly shows it does actually exist
masters and johnson: EPOR model
the resolution phase
Hock & Roger (2014)
The physiology of human sexual responding
The completion of the cycle, when the body returns to its sexually non-aroused state
Happens fairly rapidly following orgasm but takes somewhat longer if orgasm hasn’t occurred
For both sexes: heart rate, blood pressure, and muscle tension drop quickly + a feeling of relaxation, warmness, content and sleepiness prevails
For females: if a additional stimulation is given, a return to the plateau phase and having another orgasm without entering the resolution phase is possible
For males: a refractory period occurs, when the man is not capable of going back to the plateau phase and reaching an orgasm again for some time
masters and johnson: EPOR model
criticisms
Hock & Roger (2014)
The physiology of human sexual responding
Neglects emotional and psychological components of sexuality, especially desires
Any model of human sexual response must emerge from psychological interpretations of sexuality, rather than purely physical reactions
The model is too androcentric = it relies to heavily on a one-size-fits-all male sexual responses and fails to acknowledge many fundamental differences in female sexuality
The four stages are too normative
alternatives to masters and johnson
kaplan’s 3 stage model of sexual response
Hock & Roger (2014)
The physiology of human sexual responding
3 stages: desire, excitement, orgasm
Argues that sexual responding is unlikely unless someone wants to be sexual
Interprets the plateau phase as simply a part of excitement
Resolution does occur but is of minimal clinical interest
Hypoactive sexual desire = persistently low level of desire for sexual activity or lack of sexual fantasies
- Moderators: fatigue, depression, pain, fear, meds, drugs, loss if interest in a partner, low self-image, hormonal influences;
Criticism: desire mustn’t always be present for sexual responding to occur initially - some only experience desire in the midst of sexual activity
alternatives to masters and johnson
reed’s erotic stimulus pathway theory
Hock & Roger (2014)
The physiology of human sexual responding
4 stages
-
Seduction: corresponds to Kaplan’s desire stage → desire is created by the behaviors people engage in that they believe will attract another person and make themselves sexually attractive to others
- E.g., wearing cologne, makeup, dressing up, flirting, etc., - Sensations: akin to excitement and plateau in the EPOR model → our heightened senses, fantasy, and imagination combine to feed the arousal and motivate us to make it continue
- Surrender = orgasm
-
Reflection: a time where both partners reflect on the experience and bring meaning to it
- Provides an opportunity for partners to interpret the sexual encounter in positive or negative terms → helps in making a choice whether to engage in this activity again
Similar to EPOR but emphasis is placed on psychological and cognitive processes
Hock & Roger (2014)
alternatives to masters and johnson
a new view of women’s sexual response
Hock & Roger (2014)
The physiology of human sexual responding
A model of female sexual response incorporating a larger variety of factors - incl physical, cognitive, social and relationships issues
Arised in response to (as a critique of) the ‘medicalization’ of sexual problems
The most serious flaws of contemporary views on sexuality:
- The incorrect assumption that male and female sexuality are fundamentally the same
- An exaggerated focus on the physiology of sex response to the exclusion of the relationship context in which it occurs
- The minimization of indiv differences in sexual responding among women
info processing - response to sexual stimuli
visual stimuli
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Among the most important in the elicitation of sexual interest, desire and arousal
Most frequently used in research
Erotic films are more powerful in eliciting sexual responses in men than non-moving sexual visual stimuli
info processing - response to sexual stimuli
non-visual stimuli - smell
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
two types of olfactory effects
1. Olfactory priming = olfactory stimulus has some gradual effect on the physiology of the recipient over a period of time
2. Olfactory signalling = olfactory stimuli have a more immediate effect on the behavior of the recipient
info processing - response to sexual stimuli
non-visual stimuli - touch
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Obviously an important source of erotic stimulation
There occur dramatic changes in the erotic tactile sensitivity of the genitalia during vasocongestive responses such as penile erection/labial engorgement
Erotic touch is not confined to the genitalia
- In the right circumstances, tactile stimulation of many parts of the body can be intensely erotic
- Central processes can influence whether genital or any tactile stimulation is perceived as erotic
info processing - response to sexual stimuli
effects of feedback and performance demand
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Masters and Johnson blamed the spectator role for causing or maintaining sexual dysfunction
- = a person looks for reassurance/validation of their sexual performance - one focuses on themselves from a third person perspective, rather than focusing on one’s sensations and sex partner
- If they don’t directly obtain the validation, they don’t get sexually aroused
- However, dysfunctional men have not differed from normal men in their response to lab-based feedback
What happens if one can see how their penis is responding?
- Perceiving a good sexual response is in itself sexually arousing
- Perceiving a poor response is sexually inhibiting
- Dysfunctional men were adversely affected by demand for a response
Awareness of our genital responses and those of a partner can either lead to a positive feedback loop, resulting in greater sexual arousal OR can lead to inhibition
Generally, awareness, feedback, being a spectator and performance demand depend on the circumstances and how they are interpreted by the individual
models of info processing
explicit vs implicit memory
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Explicit = conscious or declarative memory: mediated by the hippocampus and related cortical areas
Implicit = unconscious forms of memory: mediated by a number of different systems
Unclear which system is involved in ‘implicit’ sexual memory
models of info processing
automatic vs attentional processing
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
2 components of this cognitive model of sexuality
1. Automatic/unconscious processing = rapid and dynamic → the indiv is not aware of them, in part bc they are so rapid
2. Attentional/conscious/controlled processing
Appraisal of a stimulus as sexual (usually automatic) → leads to an emotional response that incorporates a degree of incentive motivation and a specifically sexual response
- Attentional processing appraises the response to the original stimulus
- The emotional response, and in particular the genital component of it, becomes part of the sexual stimulus
The automatic response depends on implicit sexual memory (= includes ‘learned scripts’, innate sexual reflexes & classically conditioned responses)
models of info processing
cognitive manipulation - face in the crowd effect
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Little research on ‘automatic’ processing of sexual stimuli = a lot of info is drawn from the literature on fear
‘Face in the crowd’ effect = an angry face is much more quickly identified in a group of happy faces than a happy face in the group of angry faces
The identification of the angry face results from ‘pre attentional’ automatic processing, whereas its recognition as an angry face requires attentional processing
Moderated by personality characteristics such as anxiety
models of info processing
cognitive manipulation - sexual content-induced delay
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Sexual content-induced delay: info from research on attentional biases (like the ‘face in the crowd’ effect
Studies show that, in both men and women, delay in completing a task occurs when an erotic element is present
However, unclear whether it is an effect of distraction or inhibitory mechanisms
models of info processing
cognitive manipulation - effects of distraction
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
what effect does distraction by non-sexual stimuli have on response to sexual stimuli? - from studies:
The more diffcult the (dichotic listening) task the lower the erectile response
Distraction relatively ineffective in reducing the response to sexual visual stimuli in men, whereas in women, responses to both auditory and visual stimuli were reduced = a sex difference
Distraction impaired erectile responses on non-dysfunctional subjects and a slightly enhancing effect in ED
- Negative effect in non-ed male = evidence of the fundamental importance of ‘attention to the sexual cues’ for normal sexual responses
- However, a different study found no such effect
models of info processing
cognitive manipulation - effects of misattribution and misinformation
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Tested through using pill placebo that was said to elicit sexual arousal → participant is then likely to attribute any response that occurs to the pill and consequently to minimize their own arousal
- If one gets nocebo pill and expects no sexual effect, then they will maximize their own arousal
Effect present in functional men, but not in their report of arousal, but the actual erectile response
Different findings in dysfunctional men: when told pill would decrease response, that it what happened (in the erectile response not subjective)
- But response-enhancing pill was no different to placebo
Altered expectation produced by the misattribution effect was associated in non-ed men, with a reduction in the usual level of inhibitory tone
Unclear whether automatic or conscious processing responsible
models of info processing
cognitive manipulation - false feedback
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Told males that their erectile response had been less than average following viewing an erotic film
They watched more and showed less erectile response but reported the same level of subjective arousal and no increase in negative affect
Whether the attribution is internal or external influences perceived sexual failure
habituation & conditioning
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Habituation = the process by which a response to a stimulus lessens with its repetition
- Paradox in human sexuality: some indiv continue to show preference for and response to very specific sexual stimuli, whereas others require novelty to maintain sexual arousability
Many difficulties in measuring habituation of sexual arousal to sexual stimuli, with most studies having inconsistent results
Generally, there is little support for classical conditioning as being of fundamental importance for normal sexual learning
the role of inhibition
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Dual control model: based on the premise that, in some circumstances, appraisal of a sexual stimulus leads in an uncomplicated and relatively direct way to sexual arousal, but in other circumstances, due to automatic/attentional appraisal or a combination, the sexual arousal is inhibited
The inhibitory process is predominantly automatic → whether or not such inhibition occurs will depend not only on the precise circumstances but also on individual differences in how they are appraised
mood and sexuality
clinical mood disorders and sexual function
Bancroft (2009)
Sexual arousal and response - the psychosomatic circle
Extensive literature showing sexual problems in depressed men and women (less research on anxiety)
- Most often manifest as loss of sexual interest
- More inhibited sexual arousal and orgasm, and less satisfaction/pleasure
- More self-masturbation
- However, can also result in an increase in sexuality → the relationship between negative mood and sexuality is not always in the same direction