Four Phases of Physiological Responses - Masters & Johnson (1966)

1) Excitement2) Plateau3) Orgasm

4) Resolution

-------------------------------------------------------------Two underlying responses:

1) vasocongestion2) myotonia

Three female patterns of sexual arousal

orgasmorgasm

plateauplateau

excitementexcitement

Typical male pattern of sexual arousal

BeforeStimulation

Excitement

stage 1

Plateau

stage 2

Orgasm

stage 3

Locating the “G-spot”

Brain during orgasm

fMIR offMIR ofFemaleFemaleBrainBrainDuringDuringOrgasmOrgasm

Oxygen levels in the blood correspond to the activity of different brain regions and Oxygen levels in the blood correspond to the activity of different brain regions and are represented here on a spectrum from dark red (lowest) to yellow/white (highest). are represented here on a spectrum from dark red (lowest) to yellow/white (highest). Almost the entire brain seems to be activated during orgasm.Almost the entire brain seems to be activated during orgasm.

Two stages of

ejaculation:1) emission

2) ejaculation

proper

Resolution

stage 4

Zibergeld & Ellison (1980)Five Component Model

1) Interest or desire

2) Arousal

3) Physiological readiness (vaginal lubrication/swelling & erection)

4) Orgasm

5) Satisfaction (how one evaluates or feels about what has occurred)

Whalen & Roth -Cognitive Model

Perception of a sexual stimulus

Positive evaluation

Arousal

Perception of arousal

Positive evaluation

Sexual behavior

Perception of behavior

Positive evaluation