PSYCH-190 Lecture Notes - Lecture 5: Central Nervous System, Withdrawal Reflex, Resting Potential
28 Sep 2020
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Document Summary
The difference in electrical charge between the inside and outside of a neuron"s. Polarization of cellular fluid within a neuron, which provides the capacity to cell membrane produce an action potential. An electric signal that is conducted along a neuron"s axon to a synapse. The size of the action potential is unaffected by increases in the intensity of stimulation beyond the threshold level. A period during which further stimulation can not cause another. Neurotransmitter: chemicals that transmit information across the synapse to a receiving action potential neurons dendrites. A neurotransmitter that regulates motor behavior, motivation, pleasure, and emotional arousal. Low levels of dopamine causes parkinson"s disease. A neurotransmitter that is involved in the regulation of sleep and wakefulness, eating, and aggressive behavior. The part of the nervous system that is composed of the brain and spinal cord. Receives sensory information from the external world, processes and coordinates this information, and sends commands to the skeletal and muscular systems for action.
