EEG Flashcards
What are the four lobes of the brain
- Frontal
- Temporal
- Parietal
- Occipital
What is white matter of the brain mostly made out of
myelin and axon sheaths
What is gray matter of the brain mostly made out of
nerve cell bodies and spinal fluid
why are electrodes in an EEG set up in a very specific manner
it allows commonality between people.
everyone knows what area of the brain you are referring to
What is the purpose of putting EEG on the earlobes
to act as electricity reference
Which ERP component is most strongly associated with attention and decision-making processes?
P300
During EEG analysis, a sudden burst of 2–3 Hz high-amplitude waves in the frontal region while the patient is awake may suggest:
Frontal lobe epilepsy
A child presents with generalized high-amplitude 3 Hz spike-and-wave discharges. This pattern is most consistent with:
Absence seizures
What is a key advantage of EEG over fMRI in cognitive research?
Lower cost and faster setup
- (Matching)
Match each brainwave rhythm with its associated state:
Delta →
Beta →
Theta →
Alpha →
Delta → deep sleep
Beta → active
Theta → drowsy
Alpha → relaxed
Which region is most likely to show strong alpha rhythm during rest with closed eyes?
Occipital
What EEG feature most reliably indicates the transition into deep sleep (Stage N3)?
C. High-amplitude slow waves <2 Hz
In EEG signal localization, the “inverse problem” refers to:
Inferring exact source location from scalp recordings
What is a common approach to identify ERP features from raw EEG data?
Averaging time-locked signals across trials
Which of the following would likely result in a leftward asymmetry of alpha rhythm on EEG?
D. Right hemisphere damage
Which frequency range is typically associated with drowsiness or monotonous tasks?
Theta (4–7 Hz)
