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9/12 Intro to Psych Chapter 3

by: Jessica Cialone

9/12 Intro to Psych Chapter 3 PSYC 1000

Jessica Cialone
CU Denver
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About this Document

These notes cover the rest of chapter 3.
Intro to Psychology
Liza Lizcano
Class Notes




Popular in Intro to Psychology

Popular in Psychology (PSYC)

This 3 page Class Notes was uploaded by Jessica Cialone on Monday September 12, 2016. The Class Notes belongs to PSYC 1000 at University of Colorado Denver taught by Liza Lizcano in Fall 2016. Since its upload, it has received 113 views. For similar materials see Intro to Psychology in Psychology (PSYC) at University of Colorado Denver.


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Date Created: 09/12/16
Intro to Psych September 12, 2016 Chapter 3 1. Peripheral Nervous System a. SASP: Somatic, Autonomic  Sympathetic, and Parasympathetic b. Nerves outside of the central nervous system c. Two branches: Somatic and Autonomic Somatic: relays info between CNS and body, voluntary movement Autonomic: involuntary movement Sympathetic: fight or flight Parasympathetic: rest and digestion, not active 2. Endocrine System a. Glands and hormones (influence growth, stress and emotions) b. Glands i. Pituitary gland, “master gland” Hormones: oxytocin, “love molecule” ii. Adrenal glands, “emergency centers” Hormones: adrenaline, cortisol (elevated stress levelselevated cortisol, helps regulate body weight) iii. Sexual Reproductive gland, testes and ovaries Hormones: testosterone and estrogen 3. Brain Mapping a. Phrenology i. Bumps on the head determine what personality you have or how smart you are ii. This study was found to be false because of brain injury studies Brain lesions in animals Neuropsychology in humans b. Electroencephalograph (EEG) i. Measures electrical activity, non-invasive c. Brain Scans i. CT scans- use of x/rays ii. MRI- uses magnetic fields to show structure iii. PET- measures glucose intake to show activity iv. fMRI- measures changes in blood oxygen level c. Stimulation i. Transcranial magnetic stimulations –apply magnetic field to skull that generates electric field, non- invasive, used to treat depression and hallucinations *A possible bug in fMRI software could invalidate 15 years of brain research 4. Brain Usage and Localization a. Myth- we use only 10% of our brains  Used brain scan imaging and studying brain injuries to determine brain usage b. Localization of function-brain areas associated with a certain function i. Brain regions coordinate; different regions can be involved in different tasks c. Lateralization i. When one side of our brain is more involved in a task than the other Left hemisphere-reading and writing Right: visual special skills ii. Split brain patient Corpus callosum was cut and connection between the right and left hemisphere was lost, when patient was asked to perform a task first using his right and then left hand, he was able to perform the task with his left hand using his right hemisphere but unable to do so using his left 5. Genes and Environment a. Influences on psychological traits i. Genotype-set of genes ii. Phenotype-observable traits, hair or eye color b. Genes i. Dominant (hides recessive genes) ii. Recessive genes c. Heritability i. Variability in a trait across individuals Highly heritable-height Not heritable-religion, political affiliation d. Reaction range i. How much a trait changes in a new environment e. Behavioral genetic designs i. Family studies- how do traits run throughout the family Con: shared environment ii. Twin studies iii. Adoption studies-similar to biological parent but grew up in a different environment


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