PSYC 355 Chapter Notes - Chapter 3: Goldman Equation, Electric Current, Active Transport
6 Dec 2016
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Example stepping on a thumbtack response = automatic. For response to occur breaking of skin by tack must be translated into neural signals travelling rapidly and reliably up sensory nerves of your leg. Spinal cord signals transferred to interneurons. Simple reflex requires nervous system to collect, distribute and integrate information. Neuron conducting information over distance by using electrical signals along axon. Signal used by neuron constrained by special environement of nervous system. Electrical charge in cytosol of axon carried by electrically charged atoms (ions) instead of free electrons. Axon not well insulated + bathed in salty extracellular fluid -> conducts electricity. Axonal membrane properties that allows it to conduct special types of signals. Potential = referring to separation of electrical charge across membrane. Do not diminish over time (include both nerve and muscle cells) Cell not generating impulses = at rest. Resting neuron cytosol on the inside has a negative electrical charge compared to.
