The,/.Electroencephalogram,/.(EEG) questions with correct
answers
What is EEG - correct answer ✔ ✔ -
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Record electrical activity of brain with electrodes on scalp
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- Fast temporal resolution & non invasive
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- Lacks spatial resolution
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History of EEG - correct answer ✔ ✔ -
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originally used for medicine (e.g., detecting tumours, cranial p
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
ressure)
- HOWEVER, easier ways to do this now with CT, MRI etc
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-
SO, EEG mostly used for psychological processes these days (
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
thinking, learning, social interactions etc)
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How to get EEG data - correct answer ✔ ✔ -
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Electrodes & cap
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- Electrode gel added via syringe
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- Attached to amplifier to amplify signals
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, -
Electrodes also attached to face to remove interference with m
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ovement (e.g. blinking) ,/. ,/.
Where does data come from? - correct answer ✔ ✔ -
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signals need to be oscillating and able to get through the skull
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-
glial cells = no oscillating current and cant pass through skull :
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(
-
neurone action potential cells = oscillating current but frequen
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cy too high to pass through skull :(
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-
postsynaptic potentials = oscillating current and can pass throu
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gh skull :) ,/. ,/.
event-related potential (ERP) - correct answer ✔ ✔ - ,/. ,/. ,/. ,/. ,/. ,/.
voltage measured against time following onset of stimulus
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- voltage and time depends on the type of stimulus
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ERP components - correct answer ✔ ✔ -
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Exogenous components
,/. ,/.
answers
What is EEG - correct answer ✔ ✔ -
,/. ,/. ,/. ,/. ,/. ,/.
Record electrical activity of brain with electrodes on scalp
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
- Fast temporal resolution & non invasive
,/. ,/. ,/. ,/. ,/. ,/. ,/.
- Lacks spatial resolution
,/. ,/. ,/.
History of EEG - correct answer ✔ ✔ -
,/. ,/. ,/. ,/. ,/. ,/.
originally used for medicine (e.g., detecting tumours, cranial p
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
ressure)
- HOWEVER, easier ways to do this now with CT, MRI etc
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
-
SO, EEG mostly used for psychological processes these days (
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
thinking, learning, social interactions etc)
,/. ,/. ,/. ,/.
How to get EEG data - correct answer ✔ ✔ -
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
Electrodes & cap
,/. ,/. ,/. ,/.
- Electrode gel added via syringe
,/. ,/. ,/. ,/. ,/. ,/.
- Attached to amplifier to amplify signals
,/. ,/. ,/. ,/. ,/. ,/. ,/.
, -
Electrodes also attached to face to remove interference with m
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
ovement (e.g. blinking) ,/. ,/.
Where does data come from? - correct answer ✔ ✔ -
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
signals need to be oscillating and able to get through the skull
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
-
glial cells = no oscillating current and cant pass through skull :
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
(
-
neurone action potential cells = oscillating current but frequen
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
cy too high to pass through skull :(
,/. ,/. ,/. ,/. ,/. ,/. ,/.
-
postsynaptic potentials = oscillating current and can pass throu
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
gh skull :) ,/. ,/.
event-related potential (ERP) - correct answer ✔ ✔ - ,/. ,/. ,/. ,/. ,/. ,/.
voltage measured against time following onset of stimulus
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
- voltage and time depends on the type of stimulus
,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/. ,/.
ERP components - correct answer ✔ ✔ -
,/. ,/. ,/. ,/. ,/.
Exogenous components
,/. ,/.