cognitive neuropsychology Flashcards

1
Q

brain cerebral cortex

A

outer layer of the brain

made up of grey matter= info processing cells

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2
Q

the brain is described as being

A

convoluted - folded up

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3
Q

fmri

A

measures brain activity by detecting changes associated with blood flow

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4
Q

cerebral cortex divided into

A

2 hemispheres - joined by the corpus callosum

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5
Q

each hemisphere has 4 lobes

A

frontal lobe
parietal lobe
temporal lobe
occipital lobe

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6
Q

frontal lobe

A

planning and decision making

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7
Q

parietal lobe

A

somatosensory functioning and visual attention

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8
Q

temporal lobe

A

hearing and memory

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9
Q

occipital lobe

A

vision

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10
Q

cerebellum

A

balance and coordination

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11
Q

contralateral control

A

each hemisphere controls the opposite side - vision attention action

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12
Q

origins of neuropsychology - Aristotle

A

source of cognition/feelings = heart
cooling system= brain
the bigger the brain the higher the intellect of the individual

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13
Q

plato

A

tripartite soul rational part in the brain

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14
Q

hippocrates

A

the brain is the seat of thought, sensation, emotion and cognition

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15
Q

descartes

A

mind body problem
theorised about how a on physical entity as the mind arises as a physical entity
these interactions occur in the brain

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16
Q

early 1800’s

A

gall

the more the area used, the bigger it is

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17
Q

late 1800s

A

brocas area damage= difficulties in understanding and producing speech

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18
Q

modern cognitive neuropsychology

A

study of cognitive impairments following brain injury

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19
Q

methods

A

looking at individual case studies

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20
Q

associations

A

clusters of abilities or tasks that patients cannot do

21
Q

dissociations

A

tasks that have not been affected

a patient who is impaired at one task but normal at another

22
Q

but to test whether these processes involve different parts of the brain , a

A

double dissociation task - 2+ patients with opposing deficits

23
Q

what does double association tasks tell us

A

that 2 functions involve separable

24
Q

modularity

A

our cognitive processes are reduced down into separate modules

25
what do multiple modules do
interact to result in a particular function or behaviour
26
single case studies assumptions
caramazza 1986 | fractionation assumption , transparency assumption and universality assumption
27
fractionation assumption
damaging part of the brain affects specific modules
28
transparency assumption
damaging part of the brain subtracts from a process
29
universality assumption
all brains are similar - same architecture, processes
30
phineas gage
metal rod pierced through orbitofrontal area = massive personality change
31
conclusions of phones gage
frontal lobes are involved in personality
32
HM
studied by Milner brain surgery to control seizures hippocampus removed severe memory problems
33
retrograde amnesia
problem in remembering past events
34
anterograde amnesia
difficulties in learning new information
35
HM dissociation
able to remember things up to 16 years old had a dissociation with STM but intact procedural memory- improved performance on normal mirror drawing Task
36
Clive wearing
STM impaired procedural memory intact hippocampus is important for forming memories
37
memory consolidation
taking a new memory and transferring it into the LTM system so that its retained
38
HJA
Suffered from a stroke=occipital lobe damage= visual problems unable to recognise objects = visual agnosia but intact memory TO copy pictures problems perceiving the whole object
39
what is spatial neglect
failure to notice things on one side of the space
40
spaital neglect is the result of damage to the
parietal and temporo- parietal junction - usually right hemisphere
41
assessment of spatial neglect
drawing and copying tasks | bisection and cancellation tasks
42
can the patients see on the neglected side
often have normal visual field- no visual field loss | not really aware of their problem - doesn't stop them
43
Riddoch and Humphreys 1983
patients can pay attention if cued to the neglected side | call out number at the end of the line - able to dissect line correctly
44
is neglect person centred or object centred
asked patient to draw an image = space centred | object centred= able to perceive the whole thing but only drawn the right side of each object
45
what does neglect us tell us
right hemisphere plays an important role in attention
46
opponent processor model
kinsbourne LH is pulling attention to the right RH is pulling attention to the left If damaged - undamaged hemisphere dominates attention
47
aphasia
inability to comprehend or produce speech
48
Broca aphasia
patient tan - able to understand speech but had trouble p producing speech
49
wernicke aphasia
can produce speech but had trouble understanding