Ch. 2- Anatomy

Question 1

3 ways of describing brain regions

Answer 1

anatomy/structure (hemispheres, lobes, sulci, gyri)

cytoarchitectonics (Brodmann’s areas)

function
*these can overlap!

Question 2

major brain systems

Answer 2

motor
vision
sound

Question 3

motor execution

Answer 3

M1- primary motor cortex- signal to muscles
SMA- supplementary motor cortex- internally planned and generated movements
PMC- premotor cortex- externally cued movements
PPC- posterior parietal cortex- sensory guided movements, attention

Question 4

visual input

Answer 4

input from retina travels to posterior of cortex via the thalamus

lateral geniculate nucleus- thalamic relay for vision

primary visual cortex = Brodmann area 17 (aka V1)

2 functionally distinct visual pathways: 1. ‘what’ pathway 2. ‘where’ pathway- spatial location of objects, spatiotemporal guidance

Question 5

auditory input

Answer 5

auditory cortex located on dorsal surface of the lateral sulcus (Brodmann areas 41 & 42)

tonotopically organized

Question 6

association cortex

Answer 6

non sensory & non motor areas that integrate information from primary regions & multiple senses

involved in planning & storage of information (memory)

Question 7

arcuate fasciculus

Answer 7

a dominant white matter tract that connects auditory/language areas in frontal lobe (Broca’s area) with similar areas in temporal lobe (Werniche’s area)