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EEG > Patterns: Normal Sleep > Flashcards

Patterns: Normal Sleep Flashcards

1
Q

Stage N1 =

A

drowsiness

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2
Q

what will you see during stage N1 sleep?

A
  • alpha attenuation
  • slow rolling eye movements
  • POSTS
  • vertex sharp waves
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3
Q

4-5 Hz
<50 uV
bilaterally synchronous
rarely seen before age 5

A

POSTS

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4
Q

10-150uV
spontaneous
best seen in transverse montage
maximal at Cz

A

vertex sharp waves

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5
Q

what is seen in stage II sleep?

A
  • sleep spindles
  • k-complexes
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6
Q

12-15 Hz centrally
10-12 Hz frontally
<50 uV
plays a roll in memory consolidation

A

sleep spindles

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7
Q

frontal dominant
sleep spindles can ride on these
senses are beginning to block outside stimuli

A

K-complexes

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8
Q

what is seen in stage III sleep?

A

delta sleep

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9
Q

slow wave sleep with 75uV in amplitude
restorative sleep for the body
difficult to wake out of and causes grogginess

A

delta sleep

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10
Q

what is usually seen with REM sleep?

A

saw tooth waves

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11
Q

bursts of slower activity over the midline, with a spread that decreases in both directions
2-6 Hz

A

saw-tooth waves

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12
Q

how many minutes does REM occur after sleep onset?

A

90 minutes

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13
Q

early REM onset suggests narcolepsy, sleep deprivation, or inconsistent sleep schedule

A

narcolepsy

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14
Q

active mind, paralyzed body

A

paradoxical sleep

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15
Q
  • bursts of rhythmic activity in theta range
  • mid-temporal maximal location
  • seen in drowsiness
  • adolescents and young adults
A

RMTD

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16
Q
  • 6Hz
  • posterior temporal region
  • seen in drowsiness or light sleep
  • adolescents, adults, mostly young women
A

phantom spike waves

17
Q
  • sharp wave followed by a slow wave of the same polarity
  • central midline
  • seen in deep sleep
  • seen after 15 years of age, mostly adults
A

Mittens

18
Q
  • small sharp spikes
  • temporal region with broad field
  • seen in stage I or II sleep
    -adults 30-60
A

BETS

19
Q
  • positive activity
  • occiptals
  • seen in stage II
  • rarely seen before age 5, most commonly in adolescence through middle adulthood (15-35)
A

POSTS

20
Q
  • sharply contoured waves, comb-like or arciform in 14 and 6 Hz trains
  • posterior and temporal regions
  • drowsiness and light sleep
  • ages 14-16, not after 25
A

14 and 6 Hz Positive spike bursts

21
Q

-3-5Hz
- mid frontal dominant but seen in all channels
-seen in different stages
- develops 3-6 months

A

hypersynchrony

22
Q
  • slow waves mixed with the normal waking background
  • occipital region
  • awake with eyes closed
    -seen between ages 6 and 12
A

PSWY

EEG (9 decks)

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