consciousness Flashcards
kapittel 6
visual agnosia
an inability to visually recognize objects
consciousness
out moment-to moment awareness of ourselves and our environment.
selective attention
the process that focuses awareness on some stimuli to the exclusion of others
controlled processing
the conscious use of attention and effort.
automatic processing
can be performed without conscious awareness or effort.
divided attention
the ability to respond, seemingly simultaneously, to multiple tasks or demands.
blindsight
a condition where people are blind in part of their visual field they in special tests respond to stimuli in that field despite reporting that they cannot see those stimuli.
priming
exposure to a stimulus influences how you subsequently respond to that same or another stimulus.
implicit memory
when memory influences our behavior with our conscious awareness.
attention
the process of concentrating on some features of the environment to possible exclusion of others.
selective attention
maintaining a focus of attention on a specific item even when faced with alternatives and distractions.
automaticity
state reached when a rask no longer requires conscious control.
divided attention
the ability to respond, seemingly simultaneously, to multiple tasks or demands.
circadian rhythms
daily biological cycles.
suprachiasmatic nuclei (SCN)
region of the brain in the hypothalamus responsible for controlling circadian rhythms.
melatonin
hormone that has a relaxing effect on the body.
all-cause mortality
death by any cause.
seasonal affective disorder (SAD)
a cyclic tendency to become psychologically depressed during certain seasons of the year.
beta waves
the activity shown in the brain when a person is awake and alert.
alpha waves
the slower activity shown in the brain when a person is feeling relaxed and drowsy.
delta waves
very regular, slow (05-2cps) and large brain waves that appear as the sleeper moves into stage 3 of sleep.
slow-wave sleep
stage 3 and 4 together.
REM sleep (or “R”)
stage of sleep characterized by rapid eye movements, high arousal and frequent dreaming.
restoration model
states that sleep recharges our run-down bodies, and allows us to recover from physical and mental fatigue.