PSYCH 1101 Chapter Notes - Chapter 3: Myelin, Prefrontal Cortex, Heredity
15 Sep 2016
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They operate through through electrical impulses, communicate with other neurons through chemical signals, and form neural networks. Resting membrane potential: the electrical charge of a neuron when it is not active. When the electrical charge inside a neuron is di erent from the electrical charge outside of the neuron, it is polarized. transmitted. Sodium and potassium are the two main ions that contribute to the charge of a neuron. The action potential/channel openings moves along the axon like a wave. Away from the cell body and towards the terminal buttons. All-or-none principle: a neuron either res or it does not. Neurotransmitters: chemical substances that carry signals from one neuron to the other. Reuptake: the process by which a neurotransmitter is taken back into the presynaptic terminal buttons, thereby stopping its activity. Agonists: drugs that enhance the actions of the neurotransmitter. Antagonists: drugs that inhibit the actions of neurotransmitters. Actions of the nervous system and endocrine system are coordinated.
