Psychology

Chemicals that effect our nervous system. May alter consciouness and awareness, influence how we pervceive things, modify moods, feelings, emotions, and thoughts.

The procedure that a person will experience change in :

Sensations
Perceptions
Thoughts
Feelings
Behaviors

Asking a person to stare at an object or close their eyes, suggesting that the person is becoming very relaxed.

Behavioral patterns of compulsive and overwhelming desire to obtain and use drugs.
Also, strong tendencey to relapse after quitting.

Stimulant

Opium, Morphine, Heroin

3 Primary Effects: 
         Anaglesia (pain reduction)
         Euphoria (pleasureable state - Sleep/Wake)
         Constipation

A person uses a drug repeatedly, the original dose of the drug no longer produces the desired effect, so increasingly doses must be taken to obtain desired behavioral effect.

Need of drug to prevent painful withdrawl symptoms.

Painful physical & psychological symptoms occur when a dependent person stops taking a drug.

Increase activity of the central nervous system and result in heightened alertness, arousal, euphoria, and decreased appitite.

* Can be smoked or snorted
*Produces instantaneous high
*High risk of addition and dependencey

Similar to amphetamine, but includes deminishing fatigue.

Can produce:
                  anxiety
                  emotional instability
                  suspiscion

Mild stimulant
Produces physio and psychological arousal:
         Decreases fatigue & drowsiness
         Feeling of alertness
         Improved reaction time

Stimulant triggers rewards and  pleasures center.