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Introduction to Psychology Notes Week 3 (2/2 - 2/4)

by: Sadie Threlkel

Introduction to Psychology Notes Week 3 (2/2 - 2/4) PSY 100-006

Marketplace > Colorado State University > Psychlogy > PSY 100-006 > Introduction to Psychology Notes Week 3 2 2 2 4
Sadie Threlkel
GPA 3.36

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About this Document

These notes cover what we learned on Thursday (2/4). Tuesday was a snow day, and the last half of Thursday was a pre-exam -- so a very short note set this week!
Introductory Psychology
Maeve Bronwyn O'Donnell
Class Notes
Psychology, PSY100
25 ?




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This 2 page Class Notes was uploaded by Sadie Threlkel on Sunday February 7, 2016. The Class Notes belongs to PSY 100-006 at Colorado State University taught by Maeve Bronwyn O'Donnell in Fall 2016. Since its upload, it has received 27 views. For similar materials see Introductory Psychology in Psychlogy at Colorado State University.

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Date Created: 02/07/16
Psychology Notes 2/2 – 2/4 2/2 SNOW DAY – No Notes! 2/4 Experimentation  ­How we can obtain cause and effect  ­Experiment – process of isolating the effects of one or more factors by manipulating the  factors 1. Independent Variable – manipulated variable o 2 or more levels  Control group and manipulated group (control condition vs.  experimental condition) 2. Dependent Variable – measured variable  o Depends on the manipulation  o What we are expecting to change Experimental Research Terms ­Placebo – inert substance / inactive variable ­Random Assignment – assignment to condition by random chance (reduces selection  bias) ­Double Blind – procedure where neither the participant nor the researcher knows which  condition the participant is in (control or experimental)  ­All experiments are limited ethically!!! Nervous System (CNS) ­Central nervous system includes the brain and spinal cord ­Neuron – nerve cell o Basic building block of nervous system o How body transmits info (bipolar, unipolar, etc.) o 100 million neurons in the brain! Neuron Structure ­Soma – cell body; where nutrients are stored ­Axon Hillock – electrical signal begins here ­Axon – what the electric signal travels through ­Axon Terminal – where the electric signal ends up  ­Dendrite – receives the signal from the axon terminal  ­Myelin Sheath – coats axon (fatty substance) ­Nodes of Ranvier – gaps in myelin sheath  Neural Communication  ­Electrical – neurons generate electrical activity ­All­or­nothing firing o Threshold o Strength of neural activity firing is rate dependent, not voltage dependent (voltage is always the same) o More neurons fire for stronger stimuli – less for a weaker stimuli  ­Action Potential – brief electrical charge travels down axon  The Synapse ­Synapse – space between firing and receiving neurons  o receptors fit with receivers like a lock and key ­Action potential reaches axon terminal  o neurotransmitter release ­GABA  o the brain’s primary inhibitory neurotransmitter  o a deficit of this is related to insomnia  ­Glutamate o brain’s primary excitatory neurotransmitter o oversupply of this linked to migraines and seizures   


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