Shared Flashcard Set

Details

OCPM - Neurobiology - Test 2
Test 2 - Higher Cortical Function
59
Biology
Graduate
03/19/2009

Additional Biology Flashcards

 


 

Cards

Term
Where in the brain is the primary motor center
Definition
Precentral gyrus
Term
where in the brain is the primary sensory center
Definition
postcentral gyrus
Term
"Each area of the brain is contralateral, bilateral or both"
Definition
both
Term
What connects the two hemispheres of the brain
Definition
corpus callosum and anterior commisure
Term
What three regions make up the association cortex
Definition
1.Parietal/occipital/temporal; 2.Prefrontal; 3.Limbic
Term
What skills are associated with the parietal/occipital/temporal region
Definition
"symbolic communication (speech, read, write)"
Term
what skills are associated with the prefrontal region
Definition
motor planning and emotion
Term
what skills are associated with the limbic region
Definition
"emotion, memory, and learning"
Term
What actually defines the dominant cortical hemisphere
Definition
the location of the speech center
Term
T/F ~85% of the population are left side dominant
Definition
False (95%)
Term
What is an accurate way to detect the dominant hemisphere
Definition
WADA test
Term
What traits are associated with the left side of the brain
Definition
"verbal expression, logical thinking, analytical ability, liguistics, math"
Term
what traits are associated with the rights side of the brain
Definition
"non-verbal expression, visual/spatial relations, synthetic thought, initiative, music appreciation"
Term
"What is the term used to ""backup"" regions that can take over a task if the primary region is damaged"
Definition
redundancy
Term
What allows us to recover some function following cortical damage
Definition
Plasticity
Term
Is plasticity greater in children or adults
Definition
children
Term
what are the 3 groups of disorders of association cortex
Definition
"apraxias, agnosias, aphasias"
Term
what is apraxia
Definition
inability to perform a willed movement
Term
where is the damaged area of the brain with apraxia
Definition
premotor cortex
Term
what is agnosia
Definition
inability to correctly identify common items
Term
define visual agnosia
Definition
inability to recognize things by sights (not knowing a friends from sight but recognize the voice)
Term
define astereognosis
Definition
inability to recognize things by touch
Term
define autotopagnosia
Definition
ignore contralateral half of the body (other half doesn't exist to person)
Term
"is autotopagnosia a subset of apraxia, astereognosis (agnosia), or aphasia"
Definition
astereognosis (agnosia)
Term
explain time agnosia
Definition
do not recognize how time works
Term
define aphasia
Definition
"disruption of symbolic communication (hearing, speaking, reading, writing)"
Term
what are 2 key coordinating regions of the speech center related to aphasias
Definition
expressive (Broca's) aphasia; receptive (Wernicke's) aphasia
Term
explain expressive (Broca's) aphasia
Definition
garbled words - stutter-like to mutism
Term
explain receptive (Wernicke's) aphasia
Definition
Word substitutions and incoherency
Term
Name 4 other common forms of aphasia
Definition
"Agraphia, alexia, dyslexia, echolalia"
Term
define agraphia
Definition
can read but not write
Term
define alexia
Definition
cannot read
Term
define dyslexia
Definition
letter/word/symbol reversals and inversions
Term
define echolalia
Definition
"cann't understand what they hear (write down question, write response and then read it aloud)"
Term
what is it called when the two hemispheres can't communicate with eachother
Definition
disconnection syndrome (cut corpus callosum)
Term
Who is the dumbest person on Earth?
Definition
Josh Wray
Term
Who is also known as the garbage man?
Definition
Josh Wray
Term
define learning
Definition
adaptive change in behavior caused by experience
Term
list the levels of learning from lowest to highest
Definition
Non-assiciative; associative; complex; conceptualization
Term
list two examples of non-associative learning
Definition
habituation and sensitization
Term
list two examples of assiciative learning
Definition
classical conditioning (pavlov-dog); operant conditioning
Term
list three examples of complex learning
Definition
imprinting; latent; vicarious
Term
explain conceptualization learning
Definition
ability to problem solve
Term
explain memory
Definition
enter info constantly into small capacity buffer (short term) until can save in large capacity (long term)
Term
what must be present in order to learn
Definition
"input, short term, long term, recall, LEARNING"
Term
what sensation provides a strong ability to remember
Definition
sense of smell; from olfactory
Term
How can action potentials continue to be regenerated even when the input is removed (eyes closed)
Definition
reverberating circuit
Term
define reverberating circuit
Definition
sequence of neurons which innervate each other leading back to the initial neuron (A-B-C-A)
Term
where are loops of neurons located
Definition
"hippocampus, dorsomedial thalamus, temporal lobe of the cortex"
Term
loss of the ability to convert transient memory into long-term memory is known as
Definition
anterograde amnesia
Term
what other structures are also involved in converting short to long term memories
Definition
mammillary bodies
Term
how can you damage mammillary bodies
Definition
untreated alcoholism
Term
untreated alcoholism can lead to what disease
Definition
Korsakoff's syndrome
Term
loss of previously stored memories is known as
Definition
retrograde amnesia
Term
what other disease can exhibit anterograde amnesia
Definition
alzheimer's disease
Term
reverberating action potentials to store info to long-term memory involves what process
Definition
facilitation using plasticity
Term
Long term potentiation (LTP) is
Definition
subsequent stimuli yield a greater response after the conditioning stimulus
Term
describe 3 physical alterations that occur during LTP
Definition
1. presynaptic terminals envelope dendrite spines 2. new dendritic spines form on post-synaptic neurons 3. new receptor and effector proteins are in post-synaptic membrane
Term
what is the benefit of new receptor and effector proteins being in the post-synaptic membrane
Definition
is makes release of neurotransmitter more effective
Supporting users have an ad free experience!