Test 1

Question 1

Association Fibers

Answer 1

connect different cortical regions of the same hemisphere.

Question 2

Commissural Fibers

Answer 2

cross midline and connect cortical area of one hemisphere to a homologous cortical area on the other hemisphere.

Question 3

Commisure

Answer 3

bundles of fibers that cross midline carrying info from one hemisphere to the other (i.e. corupus collosum and anterior [Brocca’s Area: L is speach, R is gestures] and posterior commisures)

Question 4

Broadmann’s Area

Answer 4

area based on percentage of each type of cells found in them. Designate different areas of cortex.

Question 5

5 Functional Categories of Cortex

Answer 5

1) Primary Sensory Cortex
2) Sensory Association Cortex
3) Association Cortex
4) Motor Planning Area
5) Primary Motor Cortex

Question 6

Primary Sensory Cortex function

Answer 6

Discriminates between intensity and quality of incoming info (5 senses)

Question 7

Sensory Association Cortex function

Answer 7

complex analysis of incoming sensation

Question 8

Association Cortex function

Answer 8

controls behavior, interprets sensation, processes emotions and memories (higher level processing)

Question 9

Motor Planning Area function

Answer 9

organizes and plans movements

Question 10

Primary Motor Cortex function

Answer 10

projects of motor neurons in cord to produce movement

Question 11

Primary Sensory Area function: Somatosensory

Answer 11

discriminates shape, texture, or size of object (3,1,2)

Question 12

Primary Sensory Area function: Auditory

Answer 12

conscious discrimination of loudness and pitch of sounds (intensity)

Question 13

Primary Sensory Area function: Visual

Answer 13

Distinguish intensity of light, shape, size, location of objects

Question 14

Primary Sensory Area function: Vestibular

Answer 14

discriminates among head positions and head movements

Question 15

Sensory Association Area function: Somatosensory

Answer 15

stereognosis and memory of tactile and spatial environment

Question 16

Sereognosis

Answer 16

ability to identify an object by touch alone

Question 17

Sensory Association Area function: Visual

Answer 17

Analysis of motion, color, control of visual fixation

Question 18

Sensory Association Area function: Auditory

Answer 18

classification of sounds (knowing it is a dog barking or bell ringing)

Question 19

Primary Motor Area function

Answer 19

control of voluntary movement (4)

Question 20

Motor Planning Area function: Supplementary motor area

Answer 20

initiation of movement, orientation of head and eyes, planning bimanual and sequential movements, “set activity”

Question 21

Motor Planning Area function: Premotor cortex

Answer 21

anticipatory (“Feed Forward”) postural adjustments (“postural sets”) by control of trunk and girdle muscles. This is learned not genetic. Muscles contract before movement happens.

Question 22

Motor Planning Area function: Broca’s Area

Answer 22

motor programming and grammatical aspects of speech, in L hemisphere usually (44)

Question 23

Motor Planning Area function: Broca’s Analogue

Answer 23

planning nonverbal communication, in R or nondominant cortex. (gestures, tone of voice, etc.)

Question 24

Association Cortex function: Prefrontal

Answer 24

“Executive Functions”, goal-oriented behavior (motivation to move), planning how to accomplish goal (choosing to move not how to move), monitoring execution of plan, shot term motor memory

Question 25

Association Cortex function: Parietotemporal

Answer 25

many regions coming together here. Deals with sensory integration, problem solving, understanding language, spatial relationships (i.e. remembering cords are behind you)

Question 26

Association Cortex function: Limbic

Answer 26

emotion (helps you remember!), motivation (connected to prefrontal and may attach emotional significance to activity), conversion of short term to long term memory (need medial temporal lobe [story of D.H.])