Lateralization and Modular Reprssentation of Functions Flashcards Preview

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Flashcards in Lateralization and Modular Reprssentation of Functions Deck (22):
1

Define Laterialization in regard to the modular representation of different function

while many functions are symmetrical, there are many that are concentrated (laterialixed) primarily to epicenters on of one side of the brain. 

2

Which hemisphere is typically dominant in most people? What are the %ages of right handed and left handed people with this?

Left hempisphere

 

>95% right handers

>70% left handers

3

Which hemisphere is typically non dominant?

right hemisphere

4

What functions are associated/laterialized  with to dominant hemisphere?

Math- sequential/ analytical skills

Music- found in skilled musicians sequential/analytical

Motor- Skilled formulation (praxis)

Language

directions- Following written sequence of

 

5

What functions are associated/laterialized  with to the NON dominant hemisphere?

math- lining up # on page

music- non trained musicans OR highly complex pieces for trained ones

visual spatial analysis and attention

prosody- emotion conveyed by tone

directions- navigating based on sense of spatial orientation

 

6

Is receptive language a dominant or non dominant function? What is receptive language?

dominant 

Def- processing of incoming language information (speech, print, and sign) with the goal of comprehension

7

What areas and processes are invovled in receptive language (specifically receptive auditory comprehension)?

Primary auditory cortex- incoming language information

 

Wernicke's area - situated directly above the auditory cortex and maps sound to meaning

8

Is expressive language a dominant or non dominant skill? 

dominant

9

What is Expressive language? 

Expressive language is the production of language output (speech, writen, sign) with the goal of communicating with self or others. 

10

What areas/  processes are invovled in expressive language (specifically speech production)?

 

What about repitition?

Brocas area (contains motor program for speech) 

to

primary motor cortex

 

Repitition--> WAB

wernickes area--> arcutat fasciculus--> broca's area

11

What is apraxia? Where are the programs required for this located (hemisphere)?

The loss of previously learned motor movements

All skilled motor mo

12

What is aphasia? What are the four types?

the loss of previously acquired language functioning?

13

What hemisphere is selective/directed attention focus on? 

Non dominant; right

14

What hemisphere is spatial analysis focused on?

non dominant; right

15

What is selective/ directed attention?

the ability to focus on one domain above others. 

16

What does spatial analysis involve?

mental rotations, spatial construction and spatial imagery.

17

What does a lesion to a non-dominant parietal area lead to?

Hemineglect Syndrome: Severe impairement involving the non perception/inattention of a contralateral side of space. 

18

What is procedural memory? Example?

Memory for things that cannot be easily verbalized. 

 

Tying shoe laces

19

What structures are invovled in procedural memory?

cerebellum and basal ganglia

20

What is declaritive memory? Example?

Memory of things that can be "declared", including visual info. 

 

Facts and events. 

 

 

21

What structures are involved in declarative memory? 

Hippocampus

22

What is the hippocampus instrumental for?

it is the point structure for incoming information and it traslate is to from short term WM to long term memory, storing the information where it originated (orginally processed)