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Flashcards in Cerebral Cortex & Thalamus Deck (42)
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1

what is the cerebral cortex

regional specialised of function

2

what is the thalamus

relay and integration en route to cortex

3

what are the lobes of the brain

frontal
occipital
parietal
temporal
insula

4

what are the 6 layers of the cortex

molecular
ext granular
ext pyramidal
int granular
int pyramidal
multiform layer

5

what layers have input and outputs in the cortex

ext granular - local input

ext pyramidal - local output

int granular - thalamus input

int pyramidal - sp cord output

6

what are the 3 main constituents of the cortex

processes
cell bodies
myelin

7

what are the cerebral cortex specialisation - 2 classes

primary cortex - exit (motor) and entry points (sensory)

association cortex - interpretation, integration, complex processing adjacent to primary

8

what si the majority of cortex

association cortex

9

what are brodmann areas

subtle differences in structure
map that relates to function

10

what is the visual cortex in terms of brodmann area

primary area 17

11

what is the primary motor complex

pre central gyrus
more direct control of motor activity
force direction and speed muscle contraction

12

what are motor association cortex regions

organisation of complex movements

13

what are the motor association cortex regions

supplementary motor area
diff areas for simple move
plan and rehearsing

premotor cortex - prep for action posture and gait

14

primary somatosensory cortex diff body regions rep by

homunculus

15

where is the primary somatosensory cortex

at central sulcus

16

what is the somatosensory cortex

diff modalities in diff regions of primary somatosensory cortex

17

where is association somatosensory cortex

sup pariteal lobule

18

what is the association somatosensory cortex used for

awareness/ perception in space

19

what si imp about pre-frontal region

association cortex

20

what are some of the prefrontal lobes changes when damaged

personality changes
deficits in planning/judgment
preservation
primitive reflexes
abulia slow intellect

21

what is expressive aphasia

language is reduced to disjointed words and sentence construction is poor
comprehension is ok

22

what is tans brain

broca's area lesion (csyphillus)

23

what is receptive aphasia

unable to comprehend meaningful language damage to wernickes area

24

what is split brain

left - language and calculation
right - drawing, music, spatial perception

25

what is cerebral corte specialisation

many of th 4% with right sided language control have damaged left hemispheres switch sides

26

what is brain plasticity

how the bain can adapt e.g. cab drivers
also seen in dendrites potentiation learned behaviour

27

what is synaesthesia

stimulus received in one sensory modality gives rise to an experience in another smell blue....

28

what si the thalamus essentially

collection of nuclei (grey matter)

29

what does the thalamus do

rely and processes sensory and motor info en-route to cortex

30

what do each nucleus of the thalamus do

each communicates to the cortex with related function

31

where is the thalamus

post hypothalamus
sup midbrain
near pineal gland which is post to thalamus
has inter thalamic adhesion
below telencephlon

32

what features surround thalamus

putamen
caudate nucleus
internal capsule

33

wat kind of matter is internal capsule

white matter

34

what is the link between the two thalamus segments

inter thalamic adhesion

35

what is the cushioned bit at bottom of thalus

pulvinar

36

what can be seen below thalamus

3rd vent

37

what is the substantial nigra

below thalamus
in mesencephalon (midbrain)
assc function reward and movement

38

what is the thalamus communication with primary somatosensory cortex

Ventroposteriolateral (VPL) connects to post central gyrus for sensory from body

ventroposteriomedial (VPM) sensory form head

39

what is the thalamus communication with primary visual cortex

lateral geniculate body at back thalamus relay vision from eyes to visual cortex in occipital lobe

40

what does the medial geniculate body do of the thalamus

primary auditory relay sensation

41

what are the thalamic communications to the motor cortex

motor feedback from basal ganglia and cerebellum
through Ventrolateral segment of thalamus

42

what are the thalamic nuclei

anterior - memory instinctive behaviour

dorsomedial - emotional/subjective responses

intralaminar - pain aorusal