Cortical Structure and Function Flashcards
Describe the 2 types of cortex
- neocortex - 90% volume. 6 layers
2. allocortex - 3 layers.
Pyramidal cell
- structure
- where are they found
- big soma, long apical dendrite UP lots of synapses
2. cortex 80% hippocampus and amygdala
Granule cells
- structure
- where are they found
- small stellate, small soma
2. cortex hippocampus and cerebellum
What type of neurones are pyramidal and granule
p = excitatory glutametergic g = inhibitory gabaergic
- Name the 6 layers of the cortex
2. label the input and output
- molecular - few
- external granular
- External pyramidal
- Internal granular INPUT
- internal pyramidal OUTPUT
- multiform
what can you see using golgi and nissl stains
golgi - whole cells
nissl - cell bodies
which layers of the cortex do association fibres run
layers 1 - 3
Name the 3 input fibres to the cortex
association fibres, commisural fibres, thalamocortical fibres
Name the types of association and commisural efferent fibres in the cortex
sup longitudinal fasicularis
inf longitudinal fasicularis
occipitofrontalis fasicularis
occipitotemporalisfasicularis
arcuate fasicularis (broccas - wernickes)
uncinate fasicularis (hippocampus - amygdala)
Name the 3 types of output fibres from the cortex
projection - brainstem basal ganglia
association
commissural
what areas are big on the homonculus
the hands and lips
which layers of the cortex are bigger in the sensory and motor regions
sensory 4 motor 5
describe language lateralisation
one side of the brain is used predominantly
What id wada exam
puts one side of brain to sleep so can see which side dominant language is
describe the split brain phenominom - dissconnection syndrome
in people with a severed corpus callosum - hold key infront of left side write key left side ring right side. sees key .. info sent to R side of the brain as it crosses over. cant communicate with language centres on the right side of the brain so says RING
