___________ Is a Method for Confirming Users' Identities

question 21

Short Answer

___________ is a method for confirming users' identities.

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Definitions:

Glutamate

A major neurotransmitter in the brain involved in learning, memory, and the regulation of the nervous system's excitatory signals.

Brain

The organ located in the head of an organism that controls most of the activities of the body, processes sensory information, and is the center of thought and emotion.

Endorphins

Neurochemicals produced in the brain that act as natural painkillers and also boost feelings of pleasure or well-being.

Pain-Controlling Chemicals

Biological substances produced by the body, such as endorphins, that help to naturally relieve pain.