Localistation Of Function Flashcards

1
Q

Whta is localisation

A

Some major brain functions are located in specific areas of the cerebral cortex

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Bilateral

A

Represented symmetrically in each hemisphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

4 primary bilateral areas

A
  • primary motor cortex
  • primary visual cortex
  • primary auditory cortex
  • primary somatosensory cortex
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What areas are lateralised

A
  • brocas area
  • wernickes area
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Lateralised

A

Only appear in on hemisphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Primary motor cortex

A
  • volunteers motor function (movement)
  • highly localised in frontal lobe of brain
  • on one side of brain controls muscles on the opposite side of the body
  • found in both hemispheres
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Primary somatosensory cortex

A
  • detects sensory event (touch, pain)
  • highly localised in parietal lob of te brain
  • both hemispheres
  • cortex on one side of the brain receives sensory info from opposite side of the body
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Primary visual cortex

A
  • processes and interprets visual information received by the eyes
  • localised in occipital lob of the brain
  • both hemispheres
  • right hemisphere receiving input from left and side of visual field and visa versa
  • contains several different areas, each area processing different types of visual info eg colour,shape
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Primary auditory cortex

A
  • hearing
  • localised temporal lobe
  • revives info from both ears, auditory info from right ear mainly goes to left hemisphere however some is transmitted to the right primary auditory cortex
  • enables perception of the location of a sound
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Contralateral

A

Right hemisphere deal with left handed info or visa versa
-opposite side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Ipsilateral

A

Same side

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Broca’s area

A
  • motor control of speech production
  • one hemisphere
  • left frontal lobe
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What occurs if Barca’s area is damaged

A
  • brocas aphasia
  • eg stuttering assoitated with under activity in Broca’s area
  • ‘ no what they want to ay but cant get it out’
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Wernickes area

A
  • language comprehension, accessing stored words in order to interpret language
  • left temporal lobe
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What occurs when wernickes area is damaged

A
  • wernickes aphasia
  • struggle to make sense of what they read or hear and also finding correct word when speaking or writing language
  • often speak fluently while talking nonsense as they are using the wrong words
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Supporting evidence

A
  • case study
  • phone as gage
  • accident where a iron rod blasted through his frontal lobe
  • after the accident change in his personality
  • suggest frontal lobe is in charge of mood regulation
17
Q

Evidence against location of brain

A
  • lashely
  • removed area of cortex in rats that were learning a maze and found that this had no effect of progress
  • suggest more complex cognitive functions the whole brain is involved
18
Q

Weakness

A
  • plasticity provides an gru ent against localisation
  • brocas noted that brain unction wasn’t fixed as most aphasias regained some of their abilities
  • suggested right hemisphere was taking over some functions of the left
  • the brain can learn new ways of functioning following damage therefore functions are not rigidly localised
  • gender differences Found within research
  • harasty et al found women have large Broca’s and wernickes areas then men
  • difference makes it difficult to map specific areas
19
Q

Location of primary motor cortex

A

Frontal lobe

20
Q

Location of primary visual cortex

A

Occipital lobe

21
Q

Location of primary auditory cortex

A

Temporal lobe

22
Q

Location of somosensory lobe

A

Parietal lobe

23
Q

Location of broca area

A

Left frontal lobe

24
Q

Location of wernickes area

A

Left temporal lobe