AP PSYCHOLOGY

Detailed explanation-1: -The sequence of shifts in the electrical charge of a neuron is called Action Potential. Explanation: An action potential occurs when a neuron sends information down an axon, away from the cell body. Neuroscientists also use the terms, spike or impulse.

Detailed explanation-2: -Correct answer: Action potential. Explanation: An action potential is a very brief shift or spike in a neuron’s electrical charge that sends a message down the axon. An action potential is the can be described as a neuron “firing.” Action potentials occur after the resting potential and before a refractory period.

Detailed explanation-3: -An action potential is defined as a sudden, fast, transitory, and propagating change of the resting membrane potential. Only neurons and muscle cells are capable of generating an action potential; that property is called the excitability.

Detailed explanation-4: -The action potential has three main stages: depolarization, repolarization, and hyperpolarization. Depolarization is caused when positively charged sodium ions rush into a neuron with the opening of voltage-gated sodium channels.

Detailed explanation-5: -The action potential is an explosion of electrical activity that is created by a depolarizing current. This means that some event (a stimulus) causes the resting potential to move toward 0 mV. When the depolarization reaches about-55 mV a neuron will fire an action potential.