PSYC 3322 1st Edition Lecture 9 Outline of Last Lecture II. Drug Receptor InteractionsIII. ToleranceIV. SensitizationOutline of Current Lecture V. Discussion of specific classes of psychoactive drugsVI. Introduction to Drug Abuse and AddictionVII. Features of Drug Abuse and AddictionVIII. Wanting-and-Liking TheoryIX. EpigeneticsX. HormonesCurrent LectureDiscussion of specific classes of psychoactive drugsAntipsychotic agentsAntidepressantsAnxiolyticsAlcoholAntianxiety agents and Sedative HypnoticsOpioid AnalgesicsBehavioral StimulantsPsychotropicsIntroduction to Drug Abuse and AddictionWhat is addiction?These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- A brain disease expressed as a compulsive behavior- The continued abuse of drugs despite negative consequences- A chronic, potentially relapsing disorderFeatures of Drug Abuse and Addiction- Addiction is complex, and a precise definition is difficult. It can include: physical dependence, behavior, and relapse.Wanting-and-Liking TheoryIncentive-Sensitization Theory- Wanting (craving) and liking (pleasure) may be produced by different parts of the brain- Wanting: sensitizes with repeated drug use; craving increases- Liking: Tolerance develops repeated drug use; pleasure decreasesEpigenetics- Addictive drugs can influence gene regulation- Addictive drugs can selectively turn off genes related to voluntary control and turn on genes related to behaviors susceptible to addictionHormonesHierarchical Control of Hormones- Hormones affect almost every neuron in the brain- Hypothalamus- Pituitary gland- Endocrine glands- Target organs and tissuesClasses and Function in Hormones- Steroid hormones- Peptide hormones- Homeostatic hormones- Gonadal (sex) hormones- GlucocorticoidsGonadal Hormones- Sex hormones begin to affect us before we are born and continue to affect us through our lifeGlucocorticoids and Stress- Stressor- Stress ResponseEnding a Stress Response- Normally, stress responses are brief- Stress responses are turned on in the braino
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