Parasympathetic nervous system shuts us down but is

Info icon This preview shows pages 10–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Parasympathetic nervous system shuts us down but is also involved w/ sexual behavior Preoptic area – responsible for the switch that occurs during sexual activity o There is activation of sympathetic nervous system during sexual activity o Orgasm component of sexual activity is mediated by parasympathetic nervous system Anorgasmia – inability to experience orgasm o One theory for this is that the person is too focused on other things that may or may not be related to sex o This inhibits the transition from sympathetic to parasympathetic which allows the orgasm response Drugs of abuse like cocaine can hijack the mechanisms that regulate sexual behaviors o Cocaine – dopamine agonist, facilitates or enhances dopamine by prolonging life of neurotransmitter Prolongs life by keeping the neurotransmitter in the synapse for a longer period of time Prolonged exposure to chemical causes cells that receive the message to be desensitized One study had group of male rates who engaged in sexual activity & measured their dopamine until ejaculation o Levels of dopamine increased 25-35% in a particular brain region o Levels of dopamine increased 400-600% when given cocaine Drugs that hijack dopamine system causes nervous system to become desensitized o Not sure if acute drug use has impact on sexual behavior but chronic exposure to drug does Drug alters the mechanism by which cells communicate with each other o Hypothalamus – very sensitive to hormones like testosterone, facilitates sexual response in men & women Oxytocin – facilitates orgasm and milk let-down in women during breastfeeding, enhances attachment Structure of the Nervous System Central nervous system – brain + spinal cord, peripheral nervous system everything not brain & spinal cord o Peripheral nervous system is everything that is projecting out of your spinal cord to rest of the body Peripheral nervous system can be divided into somatic and autonomic o Somatic nervous system – conscious control, associated w/ voluntary control of body movements o Autonomic nervous system – automatic control, associated w/ involuntary control of body movements Autonomic nervous system can be divided into parasympathetic and sympathetic o Parasympathetic nervous system – downregulating arousal, getting relaxed, rest and digest system o Sympathetic nervous system – group of responses in body that regulate arousal, fight or flight response
Image of page 10

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

View Full Document Right Arrow Icon
Upregulate arousal, focused on getting as much blood and sugar to your muscles What’s Cooking in the Lab Sympathetic and parasympathetic autonomic nervous system functioning is important in mind-body connection o What is going on in your psychology affects your organs and functioning & vice versa o Sympathetic nervous system kicks in when we are under some kind of stress Polygraph tests your body functions which are indicators of being under stress o You wear 2 electrodes that send out a very small current o When sweating due to stress, current increases – you see increase in meter on polygraph
Image of page 11
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern