Pieres section practice questions Flashcards Preview

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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

Bonferroni corrections are used to address

the multiple comparisons problem