A reaction that results from summation is called what?

A reaction that results from summation is called what?

• A. Stimulus
• B. Threshold
• C. Response
• D. Summation

Answer: (C)

The key idea is that summation adds up multiple inputs to produce a final output. When several subthreshold signals combine (temporal or spatial summation), they can reach the level needed to trigger an action potential. That event—the neuron's electrical output—acts as the reaction to the input: the response. So, the accumulation of inputs leads to a response, which is the neural activity sent to the next neuron or to a muscle. The other terms fit different roles: a stimulus is the initial signal, threshold is the depolarization level needed to fire, and summation is the process of adding inputs.

The key idea is that summation adds up multiple inputs to produce a final output. When several subthreshold signals combine (temporal or spatial summation), they can reach the level needed to trigger an action potential. That event—the neuron's electrical output—acts as the reaction to the input: the response. So, the accumulation of inputs leads to a response, which is the neural activity sent to the next neuron or to a muscle. The other terms fit different roles: a stimulus is the initial signal, threshold is the depolarization level needed to fire, and summation is the process of adding inputs.