Module 4

Question 0

Describe laterality

Answer 0

Hemispheres structurally similar but are somewhat different
(Area 22 larger on left side)
Connected by the corpus callosum

Question 1

Four principals of Neurologic organization

Answer 1

Interconnectivity of the brain
Centrality of the NS
Hierarchy of NS organization
Lateral it’s of brain organization

Question 2

Describe hierarchy

Answer 2

Lower levels have simpler functions
(I.e spinal cord lowest) 
Complexity of info processing increases as it goes toward the head
Cortex have more complex functions
Lesions important for diagnosis
Lesions predict behavioral impairments

Question 3

Describe centrality

Answer 3

Behavior checks in CNS then sent out of CNS

ENABLES analyzing and synthesizing multiple sources of info

Question 4

Describe inter connectivity

Answer 4

Primary/secondary/tertiary brain areas
White matter pathways
Constant communication between hemispheres
Constant communication between brain and lower levels of NS
MEDIATES fast and appropriate response to multiple stimuli

Question 5

Are both hemispheres the same?

Answer 5

No

Question 6

Describe left hemisphere

Answer 6

Talking/verbal hemisphere/linguistic
Analysis/synthesis
Praxis/ motor programming of movement

Question 7

Describe right hemisphere

Answer 7

Emotional/affective
Non-verbal prosody
Important for attention
Visuospatial/constructional tasks

Question 8

If a lesion happens to sensory data:

Answer 8

Before crossing: data not received to contra lateral hemisphere

After crossing: data not received to the ipsilateral hemisphere

Question 9

If lesion happens to motor:

Answer 9

Before crossing: contra lateral signs in the body

After crossing: ipsilateral signs in the body

Question 10

What type of organization does the neural pathways and cortical areas have?

Answer 10

Topographical

Question 11

Brain plasticity is the best when?

Answer 11

Before age 12