wakefulness

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Adenosine accumulates during periods of wakefulness and helps reduce brain activity, contributing to feelings of sleepiness.

From Science Daily • May 30, 2026

After showing signs of wakefulness, he was transferred to the Sid Watkins Rehabilitation Centre in Liverpool on 23 December that year.

From BBC • Mar. 1, 2026

After poor sleep, the brain tries to compensate during wakefulness, triggering pulses of fluid that coincide with sharp reductions in attention, according to a recent study published in Nature Neuroscience.

From The Wall Street Journal • Feb. 13, 2026

The more blue-white tones in the lighting, and the brighter it is, the more it helps support our circadian rhythms—the biological clocks inside our cells that drive our cycles of sleepiness and wakefulness.

From The Wall Street Journal • Nov. 25, 2025

Ever since we have had the sraf, we have had memory and wakefulness.

From "The Amber Spyglass" by Philip Pullman