During rapid eye movement (REM) sleep, __________ tend to inhibit activity.

A) polybrominated diphenyl ethers
B) neurotransmitters
C) motor nerves
D) perfluorinated compounds

Rapid Eye Movement

A phase of sleep characterized by quick, random movements of the eyes, dreaming, and increased brain activity.

Neurotransmitters

Neurotransmitters are chemical messengers in the brain that transmit signals across synapses from one neuron to another, influencing mental processes and behavior.

Motor Nerves

Nerves that carry signals from the brain to muscles to facilitate movement.