AAMC Flashcards
Demographic transition theory
Changes in birth and death rate associated with economic development. Drop in death rate followed by drop in birth rate.
fMRI
measures brain activity by detecting associated changes in blood flow.
CT
used to make detailed images of organs, bones, soft tissue, and blood vessels. X rays.
PET
test for disease, radioactive substance injected into body and taken up into organs. Can be tracked through organs to see if they are working correctly
MRI
creates a detailed cross sectional image of organs and other structures. Radio waves.
Sleep spindles are found in which stage of sleep?
NREM stage 2
what are sleep spindles
sudden bursts of brain activity during sleep
brains reward system found in the _______
limbic system
structures of the limbic system
SHAF
Universally expressed emotions
fear, anger, surprise, happiness, disgust, sadness
When do infants begin to develop stranger anxiety?
around 8 months
place theory
one is able to hear different pitches because differnt sound waves trigger activity at different places along the cochleas basilar membrane.
interposition
visually, one object overlaps another, causing us to see in depth. Depth perception
parallel processing
ability of the brain to simultaneously process sensory info of differing qualities
reliability
degree to which an assessment tool produces stable and consistent resuls
negative symptoms of schizophrenia
absense of appropriate behaviors and emotion
emotional flattening- no signs of emotional expression
innapropriate affect- emotion is discordant with the content of the individuals speech
positive symptoms schizophrenia
delusions, hallucinations, disorganized thoughts, disorganized speech and behavior
implicit memory is
unconscious memory