biopsych ; scanning and other techniques

?
FMRI
DFGDF
1 of 70
works by detecting changes in?
blood oxygenation and flow
2 of 70
that occur as a result of?
neural activity in specific parts of the brain
3 of 70
what happens when brain area is more active?
consumes more oxygen
4 of 70
and to meet this ncreased demand what happens?
blood flow directed to active area
5 of 70
fMRI produces images of how many dimensions?
3
6 of 70
showing which parts of brain are involved in?
particular mental process
7 of 70
and this has important implications for our inderstainding of?
localisation of function
8 of 70
EVALUATION
DFGD
9 of 70
:) strengths
dgd
10 of 70
doesn't rely on the use of?
radiation
11 of 70
if administered correctly it's virtually?
risk free
12 of 70
produces images with very high?
spatial resolution
13 of 70
depicting detail by the?
mm
14 of 70
and providing a clear picture of how?
brain activity localised
15 of 70
:( weaknesses
dfgd
16 of 70
is it spenny?
uh yeah that's why its in the waknesses
17 of 70
why does it rely on the person to stay still?
only way it can capture a clear image
18 of 70
why does it have poor temporal resolution?
5-second time lag
19 of 70
can only measure blood flow and can't home in on what?
activity of individual enurons
20 of 70
which can make it difficutl to tell?
exactly what kind of brain activity is being represented
21 of 70
EEG
dfgf
22 of 70
measures what in the brain?
electrical activity
23 of 70
via?
electrodes in skull cap
24 of 70
scan represents brainwave patterns generated from?
millions neyrons
25 of 70
providin?
overall account brain activity
26 of 70
often used by clinicians as?
diagnostic tool
27 of 70
as unusual arrhytmic patterns of activity may indicate?
neurological abnormalities like epileps / tumors / sleep disoreder
28 of 70
EVALUATION
DFGD
29 of 70
:) strengths
dfgd
30 of 70
invaluable in diagnosis of epileps characterised by?
random bursts activity easily detected on screen
31 of 70
similarly contributed much to our understanding of?
sleep stages
32 of 70
what is high unlike with FMRI?
tempora resolution
33 of 70
can accurately detect brain activity @ how fast resolution?
millisecond
34 of 70
:( weaknsses
dfgd
35 of 70
what nature of info?
generalised
36 of 70
not useful for doing what?
pinpointing exact source neural activity
37 of 70
and doesn't allow rsrchers to distinguish between?
activities originating in adjacent but different locations
38 of 70
ERPs
DGD
39 of 70
what does EEG data contain in the overly general measure brain activity?
all neural responses associated to specific sensory / cog / motor events
40 of 70
as such researchers have developed a way of doing what with these?
teasing out and isolating them
41 of 70
what happens to all extraneous brain activity?
filtered out
42 of 70
leaving only responses that relate to?
presentation of specific stimulus or performance tasts
43 of 70
event-related potentials are?
types of brainwave triggered by particular events
44 of 70
rsrch revealed many different forms of ERP and how these are linked to what?
cognitive processes like attention and perception
45 of 70
EVALUATION
dfgd
46 of 70
:) stengths
dfg
47 of 70
bring about more what than raw EEG?
specificity to measurement
48 of 70
bc they're derived from EEGs they have excellent?
temporal resolution
49 of 70
which has led to widespread use in measurement of
cognitive functions and deficits
50 of 70
like what in working memory?
p3000 component
51 of 70
:( weaknesses
dfgdg
52 of 70
pointed to lack of what in methodology?
standardisation
53 of 70
which makes it difficult to do what with findings?
confirm
54 of 70
a further issue is that what isn't always easy to achieve?
cancelling out all extraneous material for pure data
55 of 70
POST-MORTEMS
DFG
56 of 70
involves analysis of brain when?
after death (thats... that's kind of what post-mortem means)
57 of 70
what kind of individual's brains are most liklely to be subject ot a post-mortem?
those with rare disorder and exp unusual deficits in mental processes / behaviour during lifetime
58 of 70
areas of damage in brain examined after death as means of ding what?
establishing likely cause of affection in person suffered
59 of 70
this may also involve comparison with neurotupical why?
ascertain extent of difference
60 of 70
EVALUATION
DFGD
61 of 70
:) strengths
dfgdf
62 of 70
evidence from this vital in providing what?
foundation for early understanding of key brain processes
63 of 70
broca and wernicke both relied on these studies to est links between?
lang / brain and behavioir
64 of 70
post-mortems improve med knowledge and help generate?
hypotheses for future stury
65 of 70
:( weaknesses
dfgdfg
66 of 70
what is an issue here?
causation
67 of 70
observed damage may not be linked to deficits but instead?
some other trauma incident
68 of 70
further problem is what ethical issue?
consent
69 of 70
dead patients can't provide what?
informed consent
70 of 70

Other cards in this set

Card 2

Front

works by detecting changes in?

Back

blood oxygenation and flow

Card 3

Front

that occur as a result of?

Back

Preview of the front of card 3

Card 4

Front

what happens when brain area is more active?

Back

Preview of the front of card 4

Card 5

Front

and to meet this ncreased demand what happens?

Back

Preview of the front of card 5
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