localisation of function in the brain Flashcards

1
Q

define localisation

A

the theory that different areas of the brain are responsible for different behaviours, processes, activities

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2
Q

define holistic

A

all parts of the brain are involved in the processing of thoughts and actions

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3
Q

when was holistic theory first founded

A

19th century

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4
Q

define localisation (cortical specialisation)

A

different parts of the brain perform different tasks and involved in different parts of the body

if an area of the brain becomes damaged through illness and injury the function associated with that area becomes affected

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5
Q

what hemisphere controls activity on the right side of the body

A

the left hemisphere controls the right side of the body

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6
Q

what hemisphere controls activity on the left side of the body

A

the right hemisphere controls the left side of the body

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7
Q

define lateralisation

A

some functions are controlled or dominated by a particular hemisphere

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8
Q

what is the thickness of the cerebral cortex

A

3mm thick

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9
Q

what is the purpose of the cerebral cortex

A

higher level processing
(problem solving, learning)

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10
Q

why is the cerebral cortex grey

A

due to the location of cell bodies

human cortex’s are more developed than animals

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11
Q

what lobe is the motor area located in

A

frontal lobe

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12
Q

what function of the motor area

A

voluntary moments in opposites side of the body

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13
Q

what does damage to the motor area cause

A

loss of control of fine movements

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14
Q

what area is located in the left frontal lobe

A

Brocas area

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15
Q

what is the function of Broca’s area

A

speech production

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16
Q

what does damage to Broca’s area cause

A

Broca’s aphasia

(speech is slow, laborious, lacks fluency)

17
Q

give 3 characteristics of Broca’s aphasia

A

speech is slow
laborious
lacks fluency

18
Q

what lobe is the auditory area located in

A

temporal lobe

19
Q

what is the function of the auditory area

A

analyse speech

20
Q

what does damage to the auditory area cause

A

hearing loss/ inability top comprehend language

21
Q

what lobe is the somatosensory area located in

A

parietal lobe

22
Q

what is the function of the somatosensory area

A

Sensory information from the skin is represented.

Amount of the area devoted
to a body part denotes its sensitivity

23
Q

what lobe is the visual area located in

A

occipital lobe

24
Q

what is the function of the visual area

A

each eye sends information from right visual field to left visual cortex

25
Q

what does damage to the visual area cause

A

blindness

in opposite visual field

26
Q

where is Wernickle’s area located

A

left temporal lobe

27
Q

what is the function of Wernickle’s area

A

language comprehension

28
Q

what does damage to Wernickle’s area cause

A

Wernickle’s aphasia

(produces neologisms
(nonsense words as part of speech ,fluent but meaningless)

29
Q

give 2 characteristics of Wernickle’s aphasia

A
  • produces neologisms
    (nonsense words as part of speech)
  • fluent but meaningless
30
Q

explain the case study of Phineas Cage

A

1848

25 year old Phineas Gage used explosives on a rock causing a role go go through his left cheek from his eye and exiting his skull through the top of his head taking most of his left frontal lobe

gage survived but his personality was changed he became rude and quick tempered