Psy137SexDiffAnimalModels

Immediately following ejaculation no re arousal is

Info iconThis preview shows pages 11–24. Sign up to view the full content.

View Full Document Right Arrow Icon
Immediately following ejaculation no re-arousal is possible “absolute refractory period” At end of PEI, re-arousal is possible “relative refractory period” Ejaculation induces sexual inhibition
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Fig. 1. (A) Percent of males copulating each week to a criterion of behavioral ejaculation. One group of males was tested bi-weekly beginning 1 week after castration (filled circles; N = 9) and the other was first tested 7 weeks after castration (open circles; N = 11). Mean ± SEM (B) mount, (C) intromission, and (D) ejaculation latencies and (E) post ejaculatory interval of persistent copulators (those that that ejaculated 7 weeks after castration) tested bi-weekly beginning 1 week after castration (filled circles; N = 6) and first tested 7 weeks after castration (open circles; N = 10). *Significantly different from respective pre-castration values at week − 1 ( p < 0.05). Ruth M. Costantini , Jin Ho Park , Annaliese K. Beery , Matthew J. Paul , June J. Ko , Irving Zucker Post-castration retention of reproductive behavior and olfactory preferences in male Siberian hamsters: Role of prior experience Hormones and Behavior Volume 51, Issue 1 2007 149 - 155 http://dx.doi.org/10.1016/j.yhbeh.2006.09.007
Background image of page 12
The Coolidge Effect:
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Background image of page 14
Germline cells a.k.a Germ stem cells is a preparatory step for reproduction…need to get to ova… This requires sexual arousal and ejaculation which are controlled by ANS…
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Sex in the Autonomic NS Sexual behavior requires coordination of parasympathetic and sympathetic NS. Parasympathetic NS is activated during sexual arousal. Sympathetic NS is activated during orgasm. Sensory pathways carry information regarding genital stimulation to CNS.
Background image of page 16
Autonomic Control of Sexual Arousal
Background image of page 17

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Female Rat Precopulatory Behavior: Solicitation (Appetitive) Female rats actively solicit males Used competitively during group mating
Background image of page 18
Female Rat Precopulatory Behavior: Proceptivity Proceptive behavior enhances “attractivity” Includes ear wiggling, hopping-darting, pheromone emission “Attractiveness” increases male approach/proximity measures and pursuit.(e.g. rats will not attempt to copulate with an OVX F) Disruption of proceptive behavior (e.g P antagonist) decreases attractiveness to male.
Background image of page 19

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Female rat consummatory (copulatory) behavior: Lordosis For rats and other rodents, female copulatory behavior is passive and consists of promoting male intromission The arching of the back with tail displacement (where applicable) is referred to as Lordosis
Background image of page 20
Lordosis scores
Background image of page 21

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Effects of Ovarectomy (OVX) on F sexual behavior in rodents OVX—removal of the ovaries Ovaries produce both Estrogens E & Progesterone P F rodents only allow a male to intromit (show a lordosis response) during proestrus or behavioral estrus F ovulate in estrus (importance of pacing) Removing either E P or both can affect both appetitive (motivation) and consummatory behaviors
Background image of page 22
Endocrine Function in Rat Estrus Cycle Diestus: Low E & P, releases LH & FSH from negative feedback and LH & FSH rise producing growth of follicle which increases E. Proestrus:
Background image of page 23

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 24
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page11 / 50

Immediately following ejaculation no re arousal is possible...

This preview shows document pages 11 - 24. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online