Scientists pinpoint likely origin of stuttering in the brain

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Scientists pinpoint likely origin of stuttering in the brain
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Emily is a health news writer based in London, United Kingdom. She holds a bachelor's degree in biology from Durham University and a master's degree in clinical and therapeutic neuroscience from Oxford University. She has worked in science communication, medical writing and as a local news reporter while undertaking journalism training.

The work suggests that stuttering may be triggered by disruption to a specific network of brain cells, or neurons that connects three major regions of the brain. These regions — the amygdala, the putamen and the claustrum — are respectively involved in regulating emotions, controlling movements and relaying information between different areas of the brain.Knowing what causes stuttering could aid the development of new targeted treatments for the condition, Dr.

There are two major types of stuttering: developmental stuttering, which emerges in childhood but resolves before age 18 in up to 90% of cases, and the less-common, acquired form of stuttering, which can occur after a brain injury. These injuries include those caused by a stroke, or a disease such as Parkinson's.

Until now, scientists didn't know where in the brain stuttering originated, which limited their ability to come up with alternate treatments. They uncovered patterns in how the participants' symptom severity related to the structure of their gray matter, which includes the main bodies of neurons. People more severely impacted by their stuttering showed higher gray matter volume in the same brain network linked to stuttering after stroke. This correlation was consistent in that, the greater the volume someone showed in the network, the more severe their stuttering was.

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