States of Consciousness 3 Flashcards
psychoactive drugs
chemical substances that alter thinking, perception, memory, or some combination of those abilities
physical dependence
after using drug for some period of time, body becomes unable to function normally without the drug and person is said to be dependent or addicted
drug tolerance
sign of physical dependence
as person continues to use drug, larger and larger doses needed to achieve same initial effects of the drug
withdrawal
sign of physical dependence
symptoms when deprived of drug such as headaches, nausea, cramps, elevated blood pressure
negative reinforcement withdrawal
many users take more of drug to alleviate symptoms of withdrawal
makes whole situation worse
classical conditioning withdrawal
use drugs in certain surroundings or with certain people, when these cues are present even harder to resist using the drug
contingency-management therapy
operant conditioning strategy
patients earn vouchers for negative drug tests which can be exchanged for healthier items
cognitive-behavioral interventions
work to change how people think about stresses in lives and react to those stressors
work toward more effective coping without resorting to drugs
physical dependence drugs brain
drugs that can lead to dependence cause release of dopamine in mesolimbic pathway (neural track that goes from midbrain to prefrontal cortex)
brain decreases synaptic receptors for dopamine, next time take drug need more
psychological dependence
belief that drug needed to continue feeling of emotional of psychological well being
positive reinforcement withdrawal
people think need drug, rewarding properties of drug that cause dependency to develop
not all drugs produce physical dependence but any can become psychologically dependent
stimulants
increase functioning of nervous system
sympathetic or CNS speeds up
depressants
decrease functioning of nervous system
hallucinogenics
alter perceptions and may cause hallucinations
cause brain to alter interpretation of sensations, can produce sensory distortions similar to synesthesia
often experience hallucinations
two kinds: made in lab or found in nature
amphetamines
stimulants that are synthesized in labs rather than found in nature
amphetamine psychosis = nausea, vomit, strokes, delusional, paranoia