PSYC 110 Study Guide - Midterm Guide: Peripheral Nervous System, Central Nervous System, Resting Potential
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Advantage- distant places like your toes reach your brain at full strength. Disadvantage- action potentials are slower than electrical conduction: how does action potential work, when the action potential is no stimulated its membrane has a resting potential. Either way when it starts sodium gates open and allow sodium ions to enter. As they enter the axon they drive the inside of the cell to a slightly positive charge. Whenever that charge is great enough to reach the threshold of the axon it opens narrow channels that permit still charges. This influx of positively charged sodium ions is the action potential. The brain has dozens of neurotransmitters and each activates more kinds of receptors each receptor type controls somewhat different aspects of behavior. To distinguish between people who have brain disorders. Studying the brain helps explain organization of behavior. Central nervous system- the brain and spinal cord. The right hemisphere does not speak but understands language.
