AP PSYCHOLOGY

Detailed explanation-1: -The all-or-nothing law is an important principle that describes how nerve cells either fire at full strength or do not. Because of this, important information does not lose strength as it is carried to the brain, ensuring that people are able to respond to environmental stimuli. American Psychological Association.

Detailed explanation-2: -The sodium channels play a role in generating the action potential in excitable cells and activating a transmission along the axon. Action potentials either happen or they don’t; there is no such thing as a “partial” firing of a neuron. This principle is known as the all-or-none law.

Detailed explanation-3: -Neurons have an all-or-none response-they either fire or they don’t. This action potential occurs through the relocation of ions. At resting state, the neuron has a negative (-70mv) ➖charge. The negative ions are inside the neuron, while positive ions are outside the neuron.

Detailed explanation-4: -The all or none principle means that signal transmission between neurons is not dependent on the strength of the stimuli but, rather, only that the initial threshold is met. In other words, neurons will either transmit an impulse over the synapse to the next neuron completely or not at all.