Basal Ganglia Lecture Flashcards
Forebrain is derived from
prosencephalon
What is the function of the commissural fibers
communication between hemispheres
What are the three things that are made of commissural fibers
corpus callosum
anterior commissure
posterior commissure
the corpus callosum, anterior commissure, and posterior commissure are all _______ matter
white
Anterior commissure is responsible for
olfaction
Posterior commissure is known for
pupillary light reflex
Association fibers are _____ hemisphere
within a
U fibers are _______ range
short range
Superior longitudinal fasciculus, arcuate fasciculus and cingulum are _____ range
long
________ fibers are longitudinal communication of cortex with brainstem and body
projection
Fan like spread into/out of cortex is called
corona radiata
Condensed fiber bundle threading through BG and thalamus
internal capsule
What is one of the largest parts of deep grey matter in the forebrain
thalamus
the thalamus is derived from
diencephalon
Thalamus: relay system for _____ sensory input to the brain
most
T/F the thalamus is also hub between hippocampus, amygdala, and other cortical regions
T
Does the thalamus also relay motor input from cerebellum and basal ganglia
yes
What are the large subcortical nuclei of the basal ganglia responsible for
motor control
motivated behaviors
some aspects of emotion
Input from different cortical regions are ________ in basal ganglia
kept seperate
Basal ganglia loops project back out via ______ to same cortical region origin
thalamus
What are the four major types of inputs/loops of basal ganglia
emotion–limbic cortex
cognitive—PFC
sensory
motor
What are the two type of circuits through the basal ganglia
direct route
indirect route
What are two disorders of the basal ganglia
parkinson’s disease
huntington’s disease
excitatory connections use
glutamate
Inhibitory connections use
gaba
