Examlex
Different tests are required to test the differences between the means of two samples depending upon whether or not the two samples are independent or are paired.
Wakefulness
The state of being awake and aware of one's environment, contrasted with sleep or unconsciousness.
Benzodiazepine
A class of psychoactive drugs used to treat conditions such as anxiety, insomnia, and seizures by enhancing the effect of the neurotransmitter GABA in the brain.
Central Nervous System (CNS) Stimulant
A class of drugs that increase brain activity, leading to increased alertness, attention, and energy.
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