Damage to the Corona Radiata After Stroke

What it means when this bundle of nerve fibers in the brain is affected

Certain types of strokes can damage the corona radiata. This bundle of nerve fibers in the brain carries information between cells in the outermost layer of the brain (cerebral cortex) and those in the brain stem (the lower part of the brain connected to the spinal cord).

If the corona radiata is damaged by a stroke, you can experience a change in the way you express emotions. Some people also experience psychological and psychiatric changes, as well as visual impairment.

In this article, you'll learn what the corona radiata does and where it is located. You'll also learn about corona radiata stroke symptoms, prognosis, treatment, recovery, and prevention.

Neurology diagnosis
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Function of the Corona Radiata

The corona radiata is an important group of nerves. It plays a role in sending and receiving messages between regions in the brain.

The nerve cells of the corona radiata are afferent and efferent, meaning they carry messages to and from the body.

  • Afferent refers to sensory input and other input sent from the body to the brain.
  • Efferent refers to messages sent from the brain to the body to control motor function.

The corona radiata consists of afferent and efferent fibers that connect the cerebral cortex and the brain stem. The cerebral cortex processes conscious information, while the brain stem is the connection between the spinal cord and the brain.

Both are involved in sensation and motor function, and the corona radiata connects motor and sensory nerve pathways between these structures.

Corona Radiata Strokes

The corona radiata may be injured by a stroke involving small branches of blood vessels. Strokes that affect the corona radiata include:

A corona radiata stroke is called a lacunar stroke or a small vessel stroke because the corona radiata receives blood supply from small branches of the arteries in the brain.​

This region is described as white matter because it is heavily myelinated. This means it's protected by a special kind of fatty tissue that insulates and protects nerve cells.

It's also called subcortical because it's located in the deep subcortical region of the brain.

Symptoms of Corona Radiata Stroke

Strokes involving the corona radiata might be relatively small and may not cause symptoms. These strokes are called silent strokes.

On the other hand, a stroke involving the corona radiata can produce nonspecific symptoms, like the inability to care for yourself. This is a stroke predictor, even without major signs of a stroke on a brain magnetic resonance imaging (MRI) or a brain computerized tomography (CT) scan.

Associated Conditions

Besides a stroke, there are other causes of damage to the corona radiata. These include:

  • Brain tumors
  • Metastasis (spread of cancer from the body)
  • Head trauma
  • Bleeding in the brain
  • Brain infections

Any of these conditions can impact the function of the corona radiata.

Treatment

Stroke treatment includes the following steps:

  • Emergency treatment: The healthcare team will ensure the patient is medically stable and will stop a stroke by either breaking down the blood clot if it's an ischemic stroke or stopping the bleeding if it's a hemorrhagic stroke.
  • Prevention of future strokes: This involves treating underlying risk factors for stroke, like high blood pressure, diabetes, or atrial fibrillation. Your healthcare provider may recommend lifestyle changes, like adopting an exercise routine and a healthy diet.
  • Rehabilitation: After recovery, certain therapies can help patients regain functions damaged by the stroke. These include physical therapy, occupational therapy, and speech therapy.

Prognosis and Recovery

Studies have pointed to a new role of the corona radiata in predicting stroke outcome. Researchers evaluated the metabolism of various regions of the brain shortly after a stroke, using sophisticated imaging techniques.

When evaluating stroke recovery, the function of the corona radiata within the first 24 hours after a stroke helped predict the outcome after a stroke.

One study looked at 200 patients who had a corona radiata stroke. Researchers found that six months after their stroke, 45.7% of that patients had favorable ambulatory outcomes, meaning they would walk without someone else's assistance.

A Word From Verywell

Preventing a corona radiata stroke lies in stroke prevention. Stroke prevention centers on two major key components: long-term lifestyle habits and regular medical care.

Smoking is a major stroke risk factor, so an important part of stroke prevention is to quit smoking if you currently smoke. Eating a healthy diet and getting regular exercise are also components of stroke prevention.

Stress is another lifestyle issue that can contribute to stroke risk. Make efforts towards relaxation and stress reduction to help prevent stroke.

In addition, addressing medical issues such as high cholesterol and high blood pressure can help reduce your risk of stroke. It's important to maintain regular check-ups with your healthcare provider when it comes to stroke prevention because several aspects of your routine medical check-up can identify stroke risk

7 Sources
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
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By Jose Vega MD, PhD
Jose Vega MD, PhD, is a board-certified neurologist and published researcher specializing in stroke.