Ch. 3 Consciousness Flashcards
consciousness
subjective awareness of ourselves and our environment
cognitive neuroscience
interdisciplinary study of the brain activity linked with cognition
selective attention
focusing conscious awareness on a particular stimulus
blindsight
person can respond to a visual stimulus without consciously experiencing it
parallel processing
processing many aspects of a stimulus simultaneously
sequential processing
processing one aspect of a stimulus or problem at a time
sleep
periodic, natural loss of consciousness
circadian rhythm
biological clock, regular bodily rhythms
REM sleep
rapid eye movement, recurring sleep stage during which vivid dreams commonly occur
alpha waves
relatively slow brain waves of a relaxed, awake state
hallucinations
false sensory experiences
delta waves
large, slow brain waves
suprachiasmatic nucleus (SCN)
pair of cell clusters in the hypothalamus that controls circadian rhythm
insomnia
recurring problems in falling asleep or staying awake
narcolepsy
uncontrollable sleep attacks
sleep apnea
temporary cessations of breathing during sleep and repeated momentary awakenings
dream
sequence of images, emotions, thoughts, passing through a sleeping person’s mind
manifest content
Freud, symbolic, remembered story line of a dream
latent content
Freud, underlying meaning of a dream
REM rebound
tendency for REM sleep to increase following REM sleep deprivation
psychoactive drug
chemical substance that alters perceptions and moods
substance use disorder
disorder characterized by continued substance craving and use
tolerance
diminishing effect with regular use of the same dose of a drug
addiction
compulsive substance abuse
withdrawal
discomfort and distress that follow discontinuing an addictive drug or behavior
depressants
drugs that reduce neural activity and slow body functions
barbituates
drugs that depress central nervous system activity
opiates
opium and its derivatives, depress neural activity
stimulants
drugs that excite neural activity and speed body functions
amphetamines
drugs that stimulate neural activity
nicotine
stimulating and highly addictive psychoactive drug in tobacco
cocaine
powerful and addictive stimulants
meth
stimulates CNS with accelerated body functions and associated energy and mood changes
ecstacy
synthetic stimulant and mild hallucinogen
hallucinogen
psychedelic drugs, distort perceptions and evoke sensory images in the absence of sensory input