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The following calculating tool had an immediate and profound effect on the human race:
Brain Waves
Electrical patterns generated by the brain that can be measured and are indicative of different states of consciousness.
Sleep Duration
The amount of time spent in various stages of sleep during a typical sleep cycle, including both REM and non-REM sleep.
N2 Sleep
A stage of sleep characterized by sleep spindles and K-complexes, marking a deeper sleep than N1 and preceding the deeper states of N3 and REM sleep.
REM Sleep
A unique phase of sleep in mammals and birds, characterized by rapid movement of the eyes, low muscle tone throughout the body, and the propensity of the sleeper to dream vividly.
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Q62: _ applications are stored on the Web