We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is the Cerebellar Cortex?

By T. K. Marks
Updated Mar 03, 2024
Our promise to you
The Health Board is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At The Health Board, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

The cerebellar cortex is the thin crumpled gray neural tissue that makes up the outer layer of the cerebellum. The cerebellum is at the base of the brain and is considered to reign over fine motor control. Since the introduction of new neural imaging technology in the late 1980s and early '90s, scientists have been able to investigate the cerebellar cortex's role beyond mere motor control. It is widely believed to participate in cognitive and linguistic functions as well.

The cerebellum is tucked away just underneath the two hemispheres of the cerebrum, the wrinkled bulbous mound that most people think of as the brain. Like the cerebrum, the cerebellum divides itself into two hemispheres and is covered by a wrinkled outer layer of gray neural tissue. In the cerebellum, this tissue is called the cerebellar cortex. Unlike the disorganized appearance of the cerebral cortex, the cerebellar cortex's folds run in a network of tight, parallel grooves.

The cerebellar cortex consists of three layers: the stratum granulosum, the ganglionic layer and the stratum moleculare. The thickest and innermost layer, the stratum granulosum, is named for the tiny granule cells that populate it. These cells are so small and crowded together that the cerebellum contains more neurons than the rest of the brain combined. The middle ganglionic layer is made up of purkinje cell bodies, large neurons responsible for most of the electrical activity in the cerebellum. The stratum moleculare, the outer molecular layer, is made up of the flattened dendrites of the purkinje cells connected to each other by a vast array of parallel fibers.

As the largest, most neuron-rich component of the cerebellum, the cerebullar cortex plays an integral role in fine-tuning motor controls. People and animals with cerebellar damage can still perform normal motor skills, but they frequently accomplish those movements in a slow and jerky way. For example, when reaching for an object, a person with a normally functioning cerebellum moves his or her hand straight out toward the object without any hesitation or correction after the movement has begun. A person who has cerebellar damage, however, reaches out much more slowly and with erratic corrections during the entire course of the movement.

In the early 1990s, new neural imaging technology made it possible to study the cerebral cortex's role in functions not related to the motor system. Evidence collected from studies in the years that followed suggests that the cerebellar cortex also contributes to cognition, language and emotion. In addition to fine movement idiosyncrasies, people who have cerebellar cortex damage report impairments to multitasking abilities, linguistic processing and mood.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
The Health Board, in your inbox

Our latest articles, guides, and more, delivered daily.

The Health Board, in your inbox

Our latest articles, guides, and more, delivered daily.