Day 1 Notes
Day 1 Notes Psychology 150A1
Popular in Psychology 150A: Structure of Mind and Behavior (PSY 150A1)
Popular in Psychology
This 2 page Class Notes was uploaded by Brenna Flax on Wednesday September 21, 2016. The Class Notes belongs to Psychology 150A1 at University of Arizona taught by Cynthia Erickson in Fall 2016. Since its upload, it has received 35 views. For similar materials see Psychology 150A: Structure of Mind and Behavior (PSY 150A1) in Psychology at University of Arizona.
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Date Created: 09/21/16
Brenna Flax Day 1 notes ● What branch of psychology studies the relationship of the brain to behavior? ○ biology of the mind, sometimes called neuroscience or biopsychology ● The mind and the brain are the same thing ● Neuron Structure ○ cell body or soma ○ dendrites (receives incoming signals from other neurons) ○ axon (the extension of a neuron that carries messages away from the cell body) ● What are the basic parts of a neuron? ○ Many dendrites ○ one axon ○ synaptic terminal ● Electrical signals within a neuron ○ electrical information travels in a neuron ● Glial cells: provide nutrients to neurons ○ Myelin sheath: fat that wraps around the axons ● Synapse: junction between a sending neuron and a receiving neuron ○ bridges anon of one neuron w the dendrites of another neuron ○ neurotransmitters: chemical messengers released into the junctions between neurons ○ reuptake: absorption of excess neurotransmitter neurons by ● electrical : within neurons, communication is electrical ● chemical: neurons communicate with each other ● serotinin ○ low levels of serotonin linked to depression ○ drugs that treat depression act as serotonin synapses ○ selective serotonin reuptake inhibitors ■ prozac ■ zoloft ■ lexapro ■ paxil ● Dopamine ○ too much dopamine can cause schizophrenia: too much dopamine, treated with drugs ○ too little dopamine can cause parkinsons ● endorphins ○ produce a high ● Nervous system ○ nerves: information travels through axons that are bundled into cables ○ neural networks: collections of neurons that do a specific task ○ electrochemical communication network: includes all body's neurons ○ central: brain and spinal cord ○ peripheral: anything thats not in the spinal cord ■ autonomic: controls self-regulated action of internal organs and glands ■ sympathetic (arousing): fight or flight, accelerated heartbeat ■ parasympathetic (calming): rest and digest, slowed heartbeat ■ somatic ■ sensory input ■ motor input controls skeletal muscles ● Endocrine system ○ hormones: chemical messengers ■ estrogen: ovaries in women ■ testosterone: testes in maes ■ oxytocin: love hormone
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