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Definitions

cortex

[kawr-teks] / ˈkɔr tɛks /
NOUN
protective layer
Synonyms


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.

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The science of willpower is that there is part of the brain toward the front, toward the lateral prefrontal cortex, that is in charge of ordering around the rest of your brain.

From Slate ● Oct. 17, 2026

Adolescents already have a harder time than adults with planning ahead and controlling their impulses, because of the brain’s immature prefrontal cortex.

From The Wall Street Journal ● Oct. 3, 2026

One area that stood out was the prefrontal cortex, which showed higher PAD across multiple brain disorders.

From Science Daily ● Sep. 29, 2026

The change began in the posterior cortex and then moved forward, pointing to a large-scale process that may prepare the brain metabolically for REM sleep.

From Science Daily ● Sep. 26, 2026

The iron damages the left hemisphere more than the right, the front of the frontal cortex more than the back, the underside more than the top.

From "Phineas Gage" by John Fleischman

"Both the frontal and posterior temporal cortexes disrupt semantic integration, which we see happen in individuals with various aphasias," Murphy said.

From Science Daily ● Oct. 24, 2023

The hypothesis that a drug could protect other patients’ entorhinal cortexes requires more research.

From New York Times ● May 15, 2023

Prefrontal cortexes, responsible for impulse control, don’t finish developing until the mid-20s.

From Washington Post ● May 27, 2022

But Rego, who has practiced psychiatry for three decades, takes the unique approach of examining with specificity the impact of 21st century life on our magnificent, misunderstood prefrontal cortexes.

From Salon ● Dec. 13, 2021

Though no writer can avoid idioms altogether—they’re part of the English lexicon, just like individual words—good writers reach for fresh similes and metaphors that keep the reader’s sensory cortexes lit up.

From "The Sense of Style" by Steven Pinker

Research has shown that the premotor and posterior parietal cortices, along with the temporoparietal junction, are active in the brain when we are locating or thinking about ourselves.

From Salon ● May 26, 2025

The analyses unveiled a nuanced architecture of mixed feedback and feedforward processing, spanning frontal and temporal cortices.

From Science Daily ● Oct. 11, 2023

When activity in sensory cortices exceeds a threshold, a global ignition event is triggered across these cortical areas, whereby information is sent to the entire workspace.

From Scientific American ● Sep. 8, 2023

In one 2022 study, Fani, Harnett and their colleagues reported that among 81 Black women who had experienced trauma, those who reported experiencing more racial discrimination showed proportionally thinner gray matter in the cingulate cortices.

From Washington Post ● Feb. 16, 2023

If such a thing as telepathy existed, one of its glories would be the opportunity for each of us to read the books in the cerebral cortices of our loved ones.

From "Cosmos" by Carl Sagan


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