Drugs that increase neural activity and arousal, leading to heightened alertness, attention, and energy levels?
What are stimulants 
A natural stimulant found in coffee, tea, and some sodas. It acts on the central nervous system, increasing alertness?
What are caffeine

A condition where increasing amounts of a psychoactive substance are needed to achieve the same effects?
What is Tolerance

Brain waves slow down, muscles relax, and individuals may experience sudden muscle contractions known as hypnic jerks?
What is stage 1

A sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing restorative sleep, leading to daytime impairment?
What is insomnia.
Theory that dreams help store and process memories?
What is consolidation theory

The state of being aware of and able to perceive one's thoughts, feelings, sensations, and surroundings?
What is consciousness.
Drugs that slow down neural activity and bodily functions. They induce relaxation, sedation, and can lower inhibitions?
What are depressants?
A powerful stimulant derived from the coca plant. It increases neural activity, leading to euphoria, increased energy?
What are cocaine

The onset of symptoms when a person stops using a psychoactive substance after prolonged use. Symptoms can include physical discomfort, psychological distress, and cravings for the drug.
What is Withdrawal

The deepest stage of non-rapid eye movement sleep.
What is sleep stage 3

A sleep disorder characterized by excessive daytime sleepiness, sudden episodes of muscle weakness?
What is narcolepsy

Process of stabilizing and storing memories long term?
What is memory consolidation
A temporary disruption of the body's circadian rhythm due to rapid travel across multiple time zones?
What is jet lag.

Drugs that alter perception, mood, and cognitive processes, often causing hallucinations or profound changes in consciousness?
What are hallucinogens?

A depressant drug that slows down neural activity in the central nervous system. It can impair judgment, coordination?
What is alcohol.
Compulsive drug use despite negative consequences, leading to loss of control over a substance?
What is Addiction.
Brain waves further slow down, and sleep spindles and K-complexes appear.
What is stage 2

A sleep disorder characterized by pauses in breathing or shallow breathing during sleep, leading to disrupted sleep patterns?
What is sleep apnea.
Theory that dreams come from the brain making sense of random neural activity?
What is activation synthesis theory?

Employment schedules that require working outside of typical daytime hours, often disrupting the body's natural circadian rhythm, leading to sleep disturbances?
What is shift work.

drugs that act on opioid receptors in the brain and body, producing pain relief, and euphoria?
What are opioids
A highly addictive opioid drug derived from morphine. It produces intense euphoria, pain relief, and sedation?
What is Herion

A stage of sleep characterized by rapid eye movements, vivid dreams, and muscle paralysis?
What is REM sleep
A sleep disorder commonly known as sleepwalking, characterized by walking or performing other activities?
What is Somnambulism

Vivid falling or floating sensations at the start of sleep?
What are hypnagogic sensations.
Drugs that increase neurotransmitters activity by mimicking them?
What are agonists.

This any chemical substance that alters perception, mood, or behavior?
What are psychoactive drugs

The body increases the time spent in REM sleep after a period of REM deprivation?
What is REM rebound

Sleep function that restores energy and repairs the body?
What is restoration of resources.
The natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours. It influences patterns of alertness, hormone release, body temperature.
What is circadian rhythm.

Drubs that block neurotransmitters from binding?
What are antagonists.

Psychoactive drug derived from the cannabis plant. It contains THC, which alters mood, perception, and cognition?
What is Marijuana.
A sleep disorder where individuals physically act out their dreams during REM sleep, potentially causing injury to themselves?
What is REM sleep behavior disorder.
Durgs that prevent neurotransmitters from being reabsorbed into the neuron?
What are reuptake inhibitors.
