Lecture 14 Flashcards
The neocortex represents the highest level of _________.
cytoarchitecture
How many layers is the Neocortex composed of?
6 layers
Each layer in the neocortex is separated by ______ and type of ______.
cell type; connections
What are the 6 layers of the neocortex?
(M.O.O.I.M.U)
Might not be on test
- Molecular
- Outer Granular
- Outer Pyramidal
- Inner Granular
- Multiform
- Underlying White Matter
*good to know, but no clinical/therapy significance
What are the 3 types of neural elements that make connections within the cortex?
Input fibers
Projection neurons
Interneurons
Fibers coming in from other regions =
Input fibers
______ neurons send out long axons to connect to other regions.
Projection
Cells concerned with making local connections with a region=
interneurons
Circuits of neurons in the brain work in a ____ way interactive network.
two
Information is represented as ____ of ___ over large groups of simple neuron like units.
(2 words)
Patterns of activity
Processing in the basic circuits takes the form of what?
2 types of interactions
cooperative and competitive
*based on weight/strength of connections
Most treatment articles in the past 20 years on adult-onset language impairments have been based on a _______ __________ model of language processing.
cognitive neuropsychological model
What is one of the benefits of a cognitive neuropsychological model?
That it breaks down language behavior into a series of discreet steps that can be tested in the clinic and targeted for treatment
The Wernicke/Geschwind (WG) model of language attempts to develop a psychological model of language based on what?
Anatomy
What are the 3 parts of the Wernicke/Geshwind Model of Language?
- pathways associated with auditory comprehension
- pathways associted with verbal expression
- pathways for reading
Know where Broca’s area, Heschl’s area, Supramarginal Gyrus, Angular Gyrus & Wernkicke’s Area are
look at pictures
In the WG model, heard words are processed along __________ to ________ where he first cortical processing of auditory input is processed (ie: tonal discrimination).
auditory pathways
primary auditory cortex
Words are recognized and connection to their meanings begins in ________.
Wernicke’s area
then sent via the arcuate fasciculus to Broca’s area
In _______, words are converted to a code for the muscular movements of speech.
Broca’s area
Output from Broca’s area is sent to the nearby _____________ regions that control the muscles involved in the production of speech.
primary motor cortex
visual information from written words is sent from visual areas in the _______ lobe to the angular gyrus.
Occipital
In the angular gyrus, recognition of the visual signal as a written word is paired with?
it’s associated meaning
In what region are the major neurologic components of language located?
The left perisylvian region
What are the major components of the perisylvian language zone?
Broca's area Arcuate fasciculus Angular gyrus Wernicke's area Supramarginal gyrus Corpus callosum
