Examlex
Evaluate the expression.
Brain Neurotransmitters
Chemical messengers in the brain that transmit signals across synapses between neurons, influencing mood, thought, and behavior.
Cocaine
A powerful stimulant drug derived from the leaves of the coca plant, known for its euphoric effects but also for its high potential for addiction and adverse health effects.
REM Sleep
A phase of sleep characterized by rapid eye movements, dreaming, and increased brain activity, playing a key role in learning and memory.
Dreaming
A series of thoughts, images, and sensations occurring in a person's mind during sleep.
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