Biological Pyschology PSYC 1000
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This 2 page Class Notes was uploaded by Cydney Tinsley on Friday September 9, 2016. The Class Notes belongs to PSYC 1000 at University of Colorado Denver taught by Alex Northcutt in Fall 2016. Since its upload, it has received 51 views. For similar materials see Introduction to Psychology in Psychology (PSYC) at University of Colorado Denver.
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Date Created: 09/09/16
Cydney Tinsley Psychology Week 3: Measures of Central Tendency and Intro to Biological Psychology Measures of Central Tendency and Intro to Biological Psychology 1. Demand Characteristics: a. When a subject behaves differently because of the way the experiment is set up or conducted, or because of the way the experimenter behaves. 2. Confounding Variables: a. Variables that influence a study, but are not variables you intended to test. 3. Measures of Central Tendency a. Mean: The average of a group of numbers. (Add up the numbers, then divide by the number of numbers there are). b. Median: The number that is in the middle of a group of numbers, when the numbers are in order from least to greatest. c. Mode: The number that occurs most often in a group of numbers. (There will not always be a mode.) i. Example: 62,67,73,73,78,80,82 1. Mean: 73.6 ([62+67+73+73+78+80+82] divided by 7). 2. Median: 73 (62,67,73,73,78,80,82) 3. Mode: 73 (62,67,73,73,78,80,82) 4. Standard Deviation a. The plot of scores or results in relationship to the mean. b. Normal Distribution: Essentially a ‘Bell-Curve’. When graphed, it should look like a U or an upside-down U. c. Standard Error: How much variability there is in your sample? Also tells you how reliable your finding.is. d. Valid: Does your study measure what you want it to measure? e. Reliable: Did you get the same or very similar result every time? f. Standardization: A system structured with rules on how to conduct a study. g. A study that is valid will almost always be reliable. If a study is reliable, it will almost always be standardized. 5. Biological Psychology a. Nervous System: Divided into two parts: i. Central Nervous System: Functions of the brain/spinal cord. ii. Peripheral Nervous System: Pretty much everything else. b. Central Nervous System: i. Parts of the Neuron 1. Cell Body: The “Power-house” of the cell. Has all the basic cell parts; nucleus, ribosomes, mitochondria, etc. 2. Axon: How a nerve impulse travels and the function used to help cells communicate. 3. Myelin Sheath: Insulates the axon so its electric signals don’t degrade. 4. Nodes of Ranvier: Gaps in the Myelin Sheath where the signal can ‘recharge’. 5. Terminal Branches: Where the signal releases neural transmitters. Cydney Tinsley Psychology Week 3: Measures of Central Tendency and Intro to Biological Psychology a. Terminal Connection: Where the branches of different Neurons connect to allow messages to be sent from cell to cell. i. Presynaptic Cell: ‘Terminal Button’ ii. Posts: Dendrites. iii. Synapse: Space between pre and post synaptic cells. iv. Vesicles: ‘Packages’ of neuro-transmitters that can be released. 6. Dendrites: Receives signals from other cells. 7. Resting Membrane Potential: When a cell has the potential to do work. It is polarized (has a negative charge). 8. Action Potential: When the cell gets a positive charge (becomes depolarized). 9. Hyper-polarization: When the cell gets polarized below the Resting Membrane Potential level. 10.Refractory Period: The time during which a cell is hyper- polarized. (This happens after Action Potential). During this time, the cell cannot do any ‘work’ or cannot get any Action Potential until it gets rebalanced to a normal level of negative charge. 11.Sodium-Potassium Hump: The part of the cell used to restore the balance of the cell’s charges. 12.Repolarization: When the cell balances out and goes back to Resting Membrane Potential. 6. Crash-Course videos on YouTube can help clarify the process a little better. That’s what I did to help me gain better understanding of the process of polarizing and de-polarizing. It’s the first two videos on the Nervous System.
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