Is the awareness of the sensations, thoughts, and feelings being experienced at the moment.

Difficulty sleeping: such as, falling asleep, and waking up frequently during the night.

Biological processes that occur regularly each day.

Trancelike state of heightened susceptibility to suggestions of others.

A learned technique that brings about an altered state of consciousness.

A drug that leads to an altered state of consciousness. They can influence a person's emotions, perceptions, and behavior.

Produce a biological or psychological dependence.

Affect the central nervous system and can increase heart rate, blood pressure, and         muscular tension.

Impede the nervous system by causing neurons to fire more slowly.

Drugs that increase relaxation and relieve pain and anxiety.

A drug that is capable of producing hallucinations, or changes in the perceptual process.

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For more study material on this topic

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my Psychology Study Help page

Thanks, mikeypzy