Localisation and function L1

Question 1

FMRI=

Answer 1

functional magnetic resonance imaging

Question 2

What are PET scans

Answer 2

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

Question 3

thinnest area of the cortex

Answer 3

visual cortex

Question 4

thickest area of the cortex

Answer 4

primary motor area

Question 5

blood supply to the brain

Answer 5

internal carotid

Question 6

blood supply to the face and scalp

Answer 6

external carotid

Question 7

right hemisphere=

Answer 7

emotional/ spacial orientation, artistic and musical

Question 8

left hemisphere=

Answer 8

intuitive thinking , logical

Question 9

which hemisphere is dominant in language comprehension in most people

Answer 9

left hemisphere

Question 10

homunculus=

Answer 10

arm and face more lateral

lower limb and genitals more medial

Question 11

everything posterior to central sulcus=

Answer 11

sensory area

Question 12

primary somatosensory cortex lesion –>

Answer 12

contralateral decrease in touch, pressure and proprioception

Question 13

secondary somatosensory cortex lesion–>

Answer 13

loss of pain

Question 14

agnosia=

Answer 14

inability to recognise something purely by touch

Question 15

hemineglect=

Answer 15

inability to care about one side of the face

Question 16

contralateral apraxia=

Answer 16

losing ability you had before

Question 17

agraphia

Answer 17

inability to write

Question 18

alexia

Answer 18

inability to read

Question 19

broca’s area is

Answer 19

posterior-inferior frontal lobe

Question 20

wernicke’s area is

Answer 20

junction of temporal, parietal and occipital lobe

Question 21

what is the middle cerebral artery a continuation of

Answer 21

internal carotid

Question 22

where does the middle cerebral artery go

Answer 22

2/3 lateral surface of cerebral hemisphere

Question 23

areas the middle cerebral artery supplies

Answer 23

speech, face and arm, frontal eye field

Question 24

what else does the middle cerebral supply

Answer 24

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

Question 25

what is the middle cerebral artery known for

Answer 25

strokes

Question 26

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

Answer 26

upper limb

Question 27

effects of the middle cerebral artery stroke (5)

Answer 27

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

Question 28

what happens in the prefrontal cortex

Answer 28

abstract thinking decision making prioritising and sequencing inhibitions

Question 29

lesions in prefrontal cortex--->

Answer 29

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

Question 30

what two arteries supply the prefrontal cortex

Answer 30

middle cerebral artery | Anterior cerebral artery

Question 31

what is the anterior cerebral artery

Answer 31

terminal branch of internal carotid

Question 32

where does the anterior cerebral artery run

Answer 32

medial surface of cerebral hemispheres | tracking around the corpus callosum

Question 33

what other artery does the anterior cerebral artery supply

Answer 33

also the medial striate artery

Question 34

what lobe does the anterior cerebral artery not supply

Answer 34

occipital lobe

Question 35

a stroke of the anterior cerebral artery-->

Answer 35

contralateral UMN/ hemiparesis Contralateral hemianasthesia LL>UL

Question 36

what is contralateral hemianaesthesia

Answer 36

loss of tactile sensibility on one side of the body

Question 37

where is the primary visual area

Answer 37

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

Question 38

what artery supply the visual area

Answer 38

posterior cerebral artery

Question 39

what is the posterior cerebral artery a continuation of

Answer 39

the basillar artery

Question 40

what happens in a posterior cerebral artery stroke

Answer 40

visual agnosia contralateral hemianopia contralateral hemianasthesia

Question 41

hemianopia=

Answer 41

blindless over half the field of vision