Flashcards in Pieres section practice questions Deck (23):
1
a within- subject t test examines
whether on average there is a significant difference between the 2 conditions for each participant
2
for a single sample t-test, the number of degrees of freedom is (where n is the number of participants)
n-1
3
the standard error of the mean (SEM) is given by the following equation
SEM= sd/sqrt(n), where sd= standard deviation, n= number of participants
4
The EEG signals are caused primarily by currents in the
apical dendrites of pyramidal neurons
5
limitations of EEG include
the EEG signal is biased by signals generated in the superficial layers of the cerebral cortex
6
in the well known 10-20 system electrodes A1 and A2 are placed
on the observers ears
7
in EEG one can compare the potential difference
two electrodes, between an electrode and a ground electrode, between an electrode and the average voltage of all the electrodes
8
what is not an artefact
EEC artefact
9
Due to a brain operation to cure his epilepsy
HM could recall events prior to his operation but was severely impaired in forming new long term memories
10
The first demonstrations of TMS by Sheffield group used TMS to
stimulate the motor cortex
11
Phineas Gage received damage to his
frontal cortex
12
considering two of the language centres of the brain
wernikes area is responsible for speech comprehension
13
In TMS butterfly coils are used because
their effect on the brain is more localized
14
In MEG, SQUIDS
measure magnetic fields
15
evoked recordings occur
in MEG, EEG and TMS
16
MEG involves everything but
liquid nitrogen ( so does include- gradiometres, magneometres, and SQUIDS
17
MEG is preferable to EEG because it has a higher temporal resolution
false
18
MEG is preferable to EEG because it has a higher spatial resolution
sometimes true but depends on the brain area
19
because fMRI is non- radioactive the same subject can be scanned repeatedly
true
20
fMRI records radio frequency signals emitted by
hydrogen nuclei
21
The maximum spatial resolution of fMRI is approximately
1 mm
22
The maximum temporal resolution of fMRI is approximately
2000 ms
23