Function of the Broadmen's Areas Part I

Question 1

Broadmann’s Area 4

Answer 1

primary cortex area
somatotopic organization
Size of areas is proportional to the degree of skill involved with movement

Question 2

Broadmann’s Area 6

Answer 2

premotor cortex area
programming for movements
Electrical stimulation produces slower movements of larger groups of muscles compared to area 4

Question 3

Inferior part of Broadmann’s Area 8

Answer 3

frontal eye field

Stimulation produces conjugate eye movement to contralateral side

Question 4

Parts of Broadmann’s Area 6 and 8

Answer 4

supplementary motor area
Medial surface
Programming for complex movements involving several parts of the body

Question 5

Broadmann’s Area 9,10,11,12,32,46,and47

Answer 5

prefrontal cortex
Nearly 1/4 of all cortex
Orbitofrontal area functions in visceral and emotional activities
Dorsolateral area functions in intellectual activities such as planning, judgement, problem solving and conceptualizing

Question 6

Broadmann’s Area 44 and 45

Answer 6

Broca’s Area
Part of the inferior frontal gyrus
Functions in speech

Question 7

Broadmann’s Area 3,1,2

Answer 7

Primary Somatosensory Area
Somatotopically organized
Areas of cortex proportional to sensory discrimination of the area not to the amount of surface area

Question 8

Broadmann’s Area 43

Answer 8

Primary Gustatory Cortex
Anterior part of parietal operculum

Posterior part of Area 43 is the secondary somatosensory area however the somatotopy is poorly defined

Question 9

Broadmann’s Area 5,7,39,40

Answer 9

parietal cortex association
7: input from visual and motor cortex
39&40: input from all association areas
function in hand performance

Question 10

Broadmann’s Area 41 and 42

Answer 10

primary auditory cortex
Tonotopic organization
High frequency sounds posteromedial, and low frequency sounds anterolateral

Question 11

Broadman’s Area 22

Answer 11

auditory association cortex
Wernicke’s area (posterior part of 22)
Language understanding and formulation

Question 12

Broadmann’s Area 17

Answer 12

striate cortex, primary visual cortex

Macular vision in posterior part

Question 13

Broadmann’s Area 18 and 19

Answer 13

occipital lobe
Receive visual info from area-17 bilaterally
Complex processing for color, movement, direction, visual interpretation