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 from 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 Supramarginal Gyrus?

By S. Berger
Updated Mar 03, 2024
Our promise to you
TheHealthBoard 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 TheHealthBoard, 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 largest part of the brain, called the cerebrum, is divided into several areas called lobes. A portion of the parietal lobe, lying just above the temporal lobe, is called the supramarginal gyrus. Located near other brain regions involved in language and hearing, this plays a role in processing heard and spoken language, as well as written words. Alternate classifications of the brain based on cell structures consider this area to be a part of Brodmann area 40, and it is sometimes referred to by this name.

Studies have been conducted to determine the role of the supramarginal gyrus while reading. In one study, participants underwent two tests that required them to focus on either the phonological, sound-based similarities between two words, or the semantic, meaning-based similarities between them. The supramarginal gyrus was found to be activated in both activities. Researchers believe that even when a reading task does not require focusing on the sounds of words, this brain region automatically assists in processing them for phonological content.

A nearby brain region, the angular gyrus, works closely with the supramarginal gyrus to process linguistic information. Processing the meaning and semantics of words seems to be the domain of the angular gyrus, whereas the supramarginal gyrus acts to determine their sound. These two gyrii are connected to parts of the brain involved in emotional processing, such as the amygdala, and this connection may mediate the emotional response to language.

Damage to the supramarginal gyrus can create deficits in language, known as aphasias. Wernicke's aphasia is one disorder that can arise from damaging this area, and it is characterized by nonsensical, abundant speech. Alternately, lesions can lead to a condition called transcortical sensory aphasia, which cases problems with comprehending words, while still being able to generate language properly and clearly.

The supramarginal gyrus is known as an association center in the brain, since it receives input from many sensory systems. Some research indicates that this region may have important roles outside of language comprehension. One study found that magnetically stimulating this gyrus led to subjects believing that they perceived a visual stimulus for longer than they actually did. These results suggest that this area may play a role in the perception of time.

Another study magnetically stimulated this gyrus and other brain regions while subjects performed a movement task that required planning. Stimulation resulted in significantly longer times for planning what hand movements to use to accomplish the task. Researchers believe there may be a connection between this region and object manipulation involving specific outcomes.

TheHealthBoard 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

TheHealthBoard, in your inbox

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

TheHealthBoard, in your inbox

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