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Block 6 Ellen > Localisation and function L1 > Flashcards

Localisation and function L1 Flashcards

1
Q

FMRI=

A

functional magnetic resonance imaging

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2
Q

What are PET scans

A

radio labelled substance into the patient takes scans before and after activity

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3
Q

thinnest area of the cortex

A

visual cortex

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4
Q

thickest area of the cortex

A

primary motor area

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5
Q

blood supply to the brain

A

internal carotid

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6
Q

blood supply to the face and scalp

A

external carotid

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7
Q

right hemisphere=

A

emotional/ spacial orientation, artistic and musical

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8
Q

left hemisphere=

A

intuitive thinking , logical

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9
Q

which hemisphere is dominant in language comprehension in most people

A

left hemisphere

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10
Q

homunculus=

A

arm and face more lateral

lower limb and genitals more medial

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11
Q

everything posterior to central sulcus=

A

sensory area

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12
Q

primary somatosensory cortex lesion –>

A

contralateral decrease in touch, pressure and proprioception

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13
Q

secondary somatosensory cortex lesion–>

A

loss of pain

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14
Q

agnosia=

A

inability to recognise something purely by touch

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15
Q

hemineglect=

A

inability to care about one side of the face

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16
Q

contralateral apraxia=

A

losing ability you had before

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17
Q

agraphia

A

inability to write

18
Q

alexia

A

inability to read

19
Q

broca’s area is

A

posterior-inferior frontal lobe

20
Q

wernicke’s area is

A

junction of temporal, parietal and occipital lobe

21
Q

what is the middle cerebral artery a continuation of

A

internal carotid

22
Q

where does the middle cerebral artery go

A

2/3 lateral surface of cerebral hemisphere

23
Q

areas the middle cerebral artery supplies

A

speech, face and arm, frontal eye field

24
Q

what else does the middle cerebral supply

A

lateral stiate arteries (corpus striatum, globus pallidus, internal capsule, thalamus)

25
Q

what is the middle cerebral artery known for

A

strokes

26
Q

what is the main limb affect by a middle cerebral artery stroke

A

upper limb

27
Q

effects of the middle cerebral artery stroke (5)

A 
contralateral hemianaesthesia 
contralateral hemianopia (blindness) 
deviation of eyes toward side of lesion
global aphasia 
anosognosia (decreased self awareness)
28
Q

what happens in the prefrontal cortex

A

abstract thinking
decision making
prioritising and sequencing
inhibitions

29
Q

lesions in prefrontal cortex—>

A

disinhibition
subtle changes in personality and social function
Decreased concentration, judgement, tact ect

30
Q

what two arteries supply the prefrontal cortex

A

middle cerebral artery

Anterior cerebral artery

31
Q

what is the anterior cerebral artery

A

terminal branch of internal carotid

32
Q

where does the anterior cerebral artery run

A

medial surface of cerebral hemispheres

tracking around the corpus callosum

33
Q

what other artery does the anterior cerebral artery supply

A

also the medial striate artery

34
Q

what lobe does the anterior cerebral artery not supply

A

occipital lobe

35
Q

a stroke of the anterior cerebral artery–>

A

contralateral UMN/ hemiparesis
Contralateral hemianasthesia
LL>UL

36
Q

what is contralateral hemianaesthesia

A

loss of tactile sensibility on one side of the body

37
Q

where is the primary visual area

A

in the occipital lobe running to the parieto-occipital sulcus
either side of the calcimime sulcus

38
Q

what artery supply the visual area

A

posterior cerebral artery

39
Q

what is the posterior cerebral artery a continuation of

A

the basillar artery

40
Q

what happens in a posterior cerebral artery stroke

A

visual agnosia
contralateral hemianopia
contralateral hemianasthesia

41
Q

hemianopia=

A

blindless over half the field of vision

Block 6 Ellen (10 decks)

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