What happens if the gray matter is damaged?

Article by: Celia Leiva Son | Last update: April 2, 2022
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The loss of gray matter in certain areas of the brain makes it possible to detect the risk of contracting Alzheimer’s. Warning signals: loss of neurons in the left hemisphere. This study has found that Alzheimer’s patients suffer from an accelerated loss of cells in certain parts of the brain.

What is the function of the gray matter of the brain?

The gray matter of the spinal cord is made up of a set of multipolar cell bodies, neuroglia, and blood vessels. The neuroglia are responsible for forming an intricate network that nourishes and supports the nerve cells.

What happens if the white matter of the brain is damaged?

When white matter pathways are damaged, the brain areas gained with such connections can wither or have their functions taken over by other brain regions.

What does lack of gray matter mean?

The gray substance (or gray matter) corresponds to those areas of the central nervous system that are greyish in color and are mainly made up of neuronal cell bodies and axons lacking myelin together with glial cells (neuroglia).

How to increase the gray matter in the brain?

According to the results of a study published in Nature, playing video games could possibly increase the volume of gray matter in the brain. Recent research has studied the insular regions of the cerebral cortex of frequent gamers and people who did not play regularly.

24 related questions found

What gives color to gray matter?

The gray substance (or gray matter) corresponds to those areas of the central nervous system that are greyish in color and are mainly made up of neuronal cell bodies and axons lacking myelin together with glial cells (neuroglia).

How is gray and white matter arranged in the brain?

In the brain, the white matter is distributed in the interior, while the cerebral cortex and the nuclei of the cells on the exterior are composed of gray matter. This distribution changes in the spinal cord, where the gray matter is in the center and the white matter is on the outside or periphery.

What happens if the gray matter of the brain is reduced?

This implies, according to the researchers, that changes in the gray matter of the frontal region of the brain may underlie the mood disturbances that COVID-19 patients often present.

Where is gray matter found in the brain?

By comparison, gray matter is tissue found on the surface of the brain (cortical). It contains the cell bodies of neurons, which give the gray matter its color.

What are white matter lesions?

White matter hyperintensities are lesions in this brain tissue that have been associated with cardiovascular risk factors. These lesions are commonly found in the brains of older people and have been linked to an increased risk of Alzheimer’s disease.

What is the white matter of the brain?

The tissue called “gray matter” present in the brain and spinal cord is also known as gray matter and is made up of cell bodies. The “white matter” or substantia alba is composed of nerve fibers.

What are white matter hyperintense foci?

Hyperintensity is a term that refers to an increase in signal insensitivity, according to the description, the increase in signal intensity in the periventricular white matter as well as in the perivascular spaces can be associated with a change typical of age, arterial hypertension, ailments infectious and/or…

Where is the black substance found?

The substantia nigra is part of the basal ganglia, a brain system made up of the neostriatum, globus pallidus, and subthalamic nucleus, as well as the substantia nigra. It is located in the part of the brain known as the “midbrain.”

How is gray matter distributed in the cerebral cortex and spinal cord?

The gray matter is found inside the spinal cord, tending towards the center and towards its sides, in the form of the letter H; and in the brain, on the other hand, in the external area except in the basal ganglia, thus forming the cerebral cortex: the most complex nervous structure in the human body.

How does gray matter decrease?

The gray matter of the brain is found mainly in the cortex that covers it and has an important role in reasoning. It usually decreases with aging, although it can do so more or less depending on each person. Now a study associates this reduction with making less risky decisions.

How is gray matter composed?

The gray matter is formed mainly by neuronal cell bodies and dendrites, where the integration and initiation of local information takes place, a site where the information is processed and passes very close to other neurons.

Where is the black substance produced?

Nerve cells in the substantia nigra send fibers to tissues located on both sides of the brain, where the cells release essential neurotransmitters that help control movement and coordination.

What is the black substance?

Definition: Pigmented mass of gray matter that occupies the central portion of the peduncle in the midbrain. Dopamine is synthesized in the substantia nigra. Lesions in this substance cause parkinsonian symptoms.

Where are the substantia nigra and red nuclei located?

The red nucleus is a structure located in the rostral (upper) part of the midbrain and is related to motor coordination. It has two portions, a lower magnocellular and a higher parvocellular. It is found dorsal to the substantia nigra, both structures forming part of the basal nuclei.

What is Hyperintense in MRI?

The high signal is usually called hyperintense and the low, hypointense, but when we use this terminology the correct thing would be to clarify: hyperintense with respect to the muscle, the CSF or the structure with which we are comparing the problem image.

What are hyperintense images?

They are known as punctate hyperintensities or hyperintense punctate signals (ie: bright spots), usually multiple. They appear especially in women with more than 1 migraine attack/month. But they are not specific to migraine as they also appear in: Epilepsy.

What is Hyperintense on T1 and T2?

On T2 she is hypotensive. In T1 hyperintense images are blood, protein substances, melanin and paramagnetic agents (gadolinium). Structures such as air, cortical bone, ligaments, tendons, fibrous tissue, and blood flow are seen as hypotensive on T1/T2.

What is a white spot on the brain?

Neurocysticercosis is a disease caused by Taenia solium larvae (called cysticerci), which develop (specifically speaking of neurocysticercosis) in any part of the central nervous system.

How is white matter status assessed?

Magnetic resonance imaging detects abnormalities in the white matter of the cerebellum, thalamus, frontal and parietal cortices, and hippocampus.

What is T2 and FLAIR?

Fluid-attenuated inversion recovery (FLAIR) is an MRI sequence that reveals T2 prolongation of cerebrospinal fluid-suppressed tissue, allowing detection of superficial brain lesions.

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