beh225_appendix_c2 (2) - Axia College Material Appendix C...

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Axia College Material Appendix C Brain Response of Behavior Part I Run Multimedias 2.3 and 2.4 o Go to the Web site www.prenhall.com/morris . o Click text: Psychology: An Introduction (12 th ed.) o Click “2” on the select a chapter tool bar. o Click Live!Psych on the left hand menu. o Select 2.3 and 2.4. Write a 350- to 700-word response to the following: Explain the communication process of neurons in the brain. List some common neurotransmitters and describe their effect on behavior. The communication of neurons in the brain can be a lengthy trip; neurons are carried from neuron to neuron. The language that neurons speak is called electrochemical impulses, which is able to be understood by the body. The neuron is covered by cell membranes a skin that separates the inside of the neuron from the surroundings. Ions just dissolve in fluid on both sides of the cell membrane. Ions are either positive or negative, which almost look like the ends of a battery. The cell membrane has gates which allow a certain amount of ions in at different times. When this cell membrane has an incoming message, the gates open at that point and the positively charges ions flow in very quickly. When the neuron is not sending a signal or messages it in a resting state of mind. When a neuron is in a resting state it has a lot more negative ions on the inside then the outside of the cell membrane. Because of this unevenness of ions, the neuron is called polarized. There has to be enough neurotransmitters to change the neuron to depolarization. An important stage that happens when the neurons depolarize is the cell membrane suddenly releases large quantities of positive ions that rush inside, completely reversing its electrical polarizing. The action potential is that either the neuron “fires” or it does not. When the neuron receives enough messages from its dendrites it “fires”. The cell body sends a message down the axon that causes the terminal buttons to release there gates open. This action potential will cause the terminal buttons at the end of the axon to open and to release the neurotransmitters
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This note was uploaded on 01/07/2012 for the course COM 155 155 taught by Professor Shepherd during the Spring '10 term at University of Phoenix.

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beh225_appendix_c2 (2) - Axia College Material Appendix C...

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