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Cortex

[kawr-teks]

Example Sentences Origin

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noun, plural -ti·ces

[-tuh-seez] .

Anatomy, Zoology.

the outer region of an organ or structure, as the outer portion of the kidney.

the cerebral cortex.

Botany.

the portion of a stem between the epidermis and the vascular tissue; bark.

any outer layer, as rind.

Mycology. the surface tissue layer of a fungus or lichen, composed of massed hyphal cells.

Origin:
1650–60; < Latin: bark, rind, shell, husk

Related forms

sub·cor·tex, noun, plural -ti·ces.

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Cortex is always a great word to know.

So is cardiovascular. Does it mean:

pertaining to or affecting the heart and blood vessels

one of the minute, coiled, tubular glands of the skin that secrete sweat

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Example Sentences

The ventromedial area is a primitive part of the cortex that appears to have evolved to help humans navigate social interactions.

Whether self-awareness simply emerges from a large cortex or whether selection for it necessarily results in one is unclear.

Focusing magnetic fields on the visual cortex of the brain caused the subjects to see luminous discs and lines.

EXPAND

The ventromedial area is a primitive part of the cortex that appears to have evolved to help humans navigate social interactions.

Whether self-awareness simply emerges from a large cortex or whether selection for it necessarily results in one is unclear.

Focusing magnetic fields on the visual cortex of the brain caused the subjects to see luminous discs and lines.

Patients with damage to the prefrontal cortex adopt a utilitarian policy when making difficult moral judgments.

Music only excites us when it makes our auditory cortex struggle to uncover its order.

When doctors asked her to think of playing tennis, areas of her motor cortex leapt to life.

Instead, they are sent to the prefrontal cortex for longer-term storage.

The grooves and folds in the cerebral cortex are called convolutions.

Whether headache is initiated by the brain stem, by the cortex or by the subcortex remains an active debate.

On the one hand, it's not exactly shocking that beauty can be sourced to the cortex.

It turns out that primates with a big frontal cortex tend to live in large groups.

But in the long term the ultimate goal would be to place electrodes in the motor cortex of the brain.

New study shows that an adult brain's visual cortex can be retrained, which could help people with.

People with more activity in the left frontal cortex than in the right, the data suggest, tend to have a cheerful temperament.

The prefrontal cortex is only the latest phase of that.

The cerebral cortex is the structure that gives the organ its convoluted surface.

The researchers suggest that two things might be happening in the auditory cortex to bring about the improvement.

Electrical activity in the brain's motor cortex speeds down the spinal cord to the part of the.

The hippocampus does so, encoding the firing sequence in the cortex and thereby consolidating the memory.

There could be several reasons why the monkey's visual cortex was active before the test was presented to them.

Their brains showed little activity in the fusiform gyrus area, that part of the cerebral cortex that processes faces.

Put your cortex through its paces with these software games.

Some progesterone is also produced by the adrenal cortex.

The study also suggested that sleep deprivation interferes with the ability of the prefrontal cortex to make logical decisions.

The mental pathways for music are complex, sometimes including not only auditory areas but also the visual cortex of the brain.

Most of the back of our brain is devoted to visual processing, and half of the cortex is involved with sight.

The prefrontal cortex doesn't get the input it needs and is being shut down by drugs.

For instance, from birth the auditory cortex will receive only sound or the visual cortex will receive only visual input.

Alzheimer's disease damages all three layers of the subiculum and layers two and four of the six-layer entorhinal cortex.

The somatosensory cortex processes touch and the anterior cingulate cortex processes pleasant information.

It is the prefrontal cortex that gets in the way of executing a practiced routine task by essentially overthinking.

Autopsy data also indicate that the frontoinsular and the anterior cingulate cortex structures are abnormal in autism disorder.

The orbitofrontal cortex becomes active when parents see their own babies smile, for example, but not other babies.

Random, quasi-periodic, signals varied across cortex with the amplitude pattern being consistent for given stimulus.

His brain-stem reflexes are attached to a nonfunctioning cortex.

The neurons in their primary motor cortex responded to the movements of the arm.

Recently he showed that one protein is produced in larger amounts in the prefrontal cortex of schizophrenic patients.

They included the prefrontal cortex and other regions typically linked to social and cognitive.

The brain stores memory at sites throughout the cortex.

The brain's auditory cortex reacts to and categorizes stimuli even when you only see the sound being produced and can't hear.

Indeed, only a neuroanatomist can tell a rice grain–size piece of mouse cortex from the same chunk of human cortex.

First, the researchers suspended a slice of brain tissue from the visual cortex of a ferret in artificial cerebrospinal fluid.

Grey matter exists as a thin, relatively flat sheet covering the rest of the brain, and is referred to as the cortex.

COLLAPSE

Collins

World English Dictionary

cortex (ˈkɔːtɛks)

—n , pl -tices
1.	anatomy the outer layer of any organ or part, such as the grey matter in the brain that covers the cerebrum (cerebral cortex) or the outer part of the kidney (renal cortex)
2.	botany
	a. the unspecialized tissue in plant stems and roots between the vascular bundles and the epidermis
	b. the outer layer of a part such as the bark of a stem

[C17: from Latin: bark, outer layer]

cortical

—*adj*

'cortically

—*adv*

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline

Word Origin & History

cortex

1650s, from L. "bark of a tree." Specifically of the brain, first recorded 1741.

American Heritage

Medical Dictionary

cortex cor·tex (kôr'těks')
n. pl. cor·tex·es or cor·ti·ces (-tĭ-sēz')

The outer layer of an internal organ or body structure, as of the kidney.
The cerebral cortex.

American Heritage

Science Dictionary

cortex (kôr'těks') Pronunciation Key

The outer layer of an organ or body part, such as the cerebrum or the adrenal glands.
The region of tissue lying between the epidermis (the outermost layer) and the vascular tissue in the roots and stems of plants. It is composed of collenchyma, parenchyma, and sclerenchyma. In roots the cortex transfers water and minerals from the epidermis to the vascular tissue, which distributes them to other parts of the plant. The cortex also provides structural support and stores food manufactured in the leaves. See illustration at xylem.

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Computing Dictionary

Cortex definition

An experimental slow controls project at CERN.
(1994-11-30)

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ACTH Addison's disease adrenal gland adrenocortical adrenocorticosteroid adrenocorticotropic

Matching Quote

"When Western people train the mind, the focus is generally on the left hemisphere of the cortex, which is the portion of the brain that is concerned with words and numbers. We enhance the logical, bounded, linear functions of the mind. In the East, exercises of this sort are for the purpose of getting in tune with the unconscious—to get rid of boundaries, not to create them."

-Edward T. Hall

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