Localisation Flashcards

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1
Q

define localisation theory

A

diiferent areas of the brain are responsible for different physical and psychological functions.

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2
Q

describe the cerberal cortex in (3 points)

A
  • tea cosy’ - covering inner parts brain
  • 3mm thick
  • what separates us from lower animlas = highly developed
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3
Q

name the 4 lobes the cortex is divided into

A
  1. frontal
  2. parietal
  3. occipital
  4. temporal
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4
Q

where is the motor area? whats is its function?

A
  • back of frontal lobe
  • controls voluntary movement
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5
Q

where is the somatosensory area?

what is its function?

A
  • front of parietal lobes
  • processes sensory information from the skin
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6
Q

where is the visual area? whats it’s function?

A
  • occipital lobe at back of brain
  • sends info from RVF (right visual field) to LVC (left visual cortex), and from LVF to RVC
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7
Q

where is the auditory area? what is its function?

A
  • temporal lobe
  • analyses speech-based information
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8
Q

where is Wernicke’s area? whats its function?

A
  • back temporal lobe
  • language comprehension
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9
Q

what will patients with Wrenick’s aphasia often produce?

A
  • nonsense words (neologisms)
  • fluent but meaningless speech
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10
Q

where is Broca’s area? whats its function?

A
  • left frontal lobe
  • speech production
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11
Q

what is Broca’s aphasia?

A
  • damage to the broca area
  • characterised by speech that is slow and lacking fluency
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12
Q

How did Broca confirm that the frontal lobe was important in speech prodcution?

A

From a patient named “Tan” (the only syllable that he could produce)

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13
Q

What could Tan do/not do?

A

Tan could understand spoken language but was unable to speak or write

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14
Q

Phineas Gage Date

A

1848

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15
Q

What happened to Gage after the accident?

A

He changed from being calm and reserved to someone quick tempered and rude

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16
Q

what conclusion was drawn from Gage’s case study?

A

The frontal lobe had a role in regulating mood

17
Q

what does Lashley (1950) suggest about higher cognitive functions?

A

are not localised but distributed in a more holisitc way in the brain

18
Q

how did lashley test this?

A

removed between 10-50% of the cortex in rats learning a maze

19
Q

what law did lashley challenege localisation with?

A

law of equipotentiality

20
Q

what is the law of equipotentiality?

A

when brain damaged - other areas of the brain ‘chip in’ so the same neuroligical action can be achieved

21
Q

Tan and the other patients did what?

A

They confirmed Broca’s (1865) contention that a ‘language centre’ in the back of the left frontal lobe is crucial for speech production