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Old 06-01-2011
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Psyche Remained asleep despite the alarm ringing!

A 26 year old medical student goes to sleep after a long day of studying for the USMLE Step 1. Although her alarm clock has been ringing for 5 minutes, she remains asleep. Which of the following brain wave patterns is this student most likely exhibiting?
a. Alpha waves
b. Beta waves
c. Delta waves
d. Theta waves
e. K complexes
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Old 06-01-2011
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it is theta waves?
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Old 06-01-2011
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Stages III and IV are known as slow-wave, delta, or deep sleep, in which the
synchronized EEG shows prominent 1- to 4-Hz delta waves; it is difficult to
awaken people from stage IV sleep of non-REM sleep
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Old 06-01-2011
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Default Answer: C delta waves

Quote:
Originally Posted by axax View Post
Stages III and IV are known as slow-wave, delta, or deep sleep, in which the
synchronized EEG shows prominent 1- to 4-Hz delta waves; it is difficult to
awaken people from stage IV sleep of non-REM sleep
Nice! The answer is indeed C. delta waves. The med student who remains asleep despite the alrm clock is in the deepest stages if sleep, stages 3 and 4, which is delta sleep.
Beta waves characterize the alert-awake stage
Alpha waves characterize the relaxed-awake stage
Theta waves characterize stage 1 of sleep, the lightest stage of sleep
Sleep spindles and K complexes characterize stage 2
Delta waves characterize stage 3-4, the deepest stage of sleep

A nice mnemonic to remember these (the order on the EEG waveform) is "at night BATS Drink Blood"
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Old 06-02-2011
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i thought theta is also concerned with the deep sleep??
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