Cerebral Cortext Flashcards
(22 cards)
paleocortex
piriform lobe
olfaction
allocortex splits into
paleocortex
archiocortex
archiocortex
hippocampus
declarative memory; spatial functions
layer 1
molecular layer
GABA neuron cell bodies; axons and dendrites excite
II
external granular layer
III
external pyramidal layer
IV
internal granular layer
V
internal pyramidal layer
VI
fusiform layer
supragranular layers
associational- with other areas of same hemispheres
comissural-opposite hemispheres (through corpus callosum)
I, II, III
agranular cortex
IV
motor
infragranular layer
V VI
project out of cortex
layer 4 has
spiny stellate cells that get thalamic input
layer V
motor projections–>basal ganglia, brainstem, spinal cord, thal
layer VI
output–>thalamus
cell types in cortex
spiny stellate- glutamate
pyramidal neurons-2356-glutamate
nonpyramidal interneurons-GABA
feed forward
inhibit those nearby
feedback inhibition
when too much exictation
what do spiny stellat ecells do
integrate thalamic and other cortical inputs
“top down processing”
thalamic pathway
thalamic input to spiny satellite–>P cells in layers 2/3–>synapse in layer 5 (perisomatic)–>output to cortex
“what is actually happening”
concidence detector
layer 1: top down input frm higher cortical areas and nonspecific thalamic nuclei that is what is exepected to area
synergy
when what is expected and what is happening meet in in perisomatic area
burst when expected=reality
