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Tracey's Lab Notes > EEG > Flashcards

EEG Flashcards

1
Q

what does amplitude refer to? What is it measured by?

A

the highs and lows of each frequency
V / mV

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2
Q

what does frequency refer to and what is it measured by?

A

the number of (positive) peaks per second
Hz

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3
Q

what does the reticular activating system work to measure? what are the four names within it?

A

the level of a person’s alert vs. comatose
beta - β
alpha - α
theta - θ
delta - δ

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4
Q

describe when you would see the beta wave on an EEG

A

when the brain is actively working

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5
Q

describe when you would see the alpha wave on an EEG

A

when the brain is at rest but awake

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6
Q

describe when you would see the theta wave on an EEG

A

found mostly in children

rarely in adults

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7
Q

describe when you would see the delta wave on an EEG

A

when in a deep sleep or under anesthetic

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8
Q

describe the appearance of the beta wave

A

erratic, asynchronous

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9
Q

describe the appearance of alpha wave

A

rhythmic, synchronous

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10
Q

what is the frequency range of beta wave?

A

14 - 30 Hz

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11
Q

what is the frequency range of alpha wave?

A

8 - 13 Hz

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12
Q

what is the frequency range of theta wave?

A

4 - 7 Hz

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13
Q

what is the frequency range of delta wave?

A

≤ 4

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14
Q

what does the alpha block refer to? Why does it happen?

A

asynchronous firing of a neuron

due to brain being busy working on a problem

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15
Q

Briefly describe what was done in experiment 1 of EEG

A

had eyes closed, then open, then closed

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16
Q

Briefly describe what was done in experiment 2 of EEG

A

eyes closed

mental math

eyes open

data collection after hyperventilation

17
Q

what state were the eyes in when collecting baseline for EEG?

A

eyes were closed

18
Q

what does alpha RMS measure? and stand for

A

Alpha root mean squared

measures amplitude of alpha waves using root mean square

19
Q

what does EEG stand for?

A

electroencephalogram

Tracey's Lab Notes (11 decks)

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