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Brain Activity Patterns Linked to Levodopa-Induced Dyskinesia in Parkinson’s Disease
Fiorillo, Luigi, Giovanni Lombardi, Nicolo La Porta, et al. “Altered Wakeful Theta Activity Characterizes Levodopa-Induced Dyskinesia in Parkinson’s Disease.” npj Parkinson’s Disease, vol. 12, article 115, March 19, 2026. Available at: https://www.nature.com/articles/s41531-026-01320-z (Nature)

For many people living with Parkinson’s disease, levodopa remains the most effective treatment for managing symptoms. However, over time, some individuals develop involuntary movements known as levodopa-induced dyskinesia (LID). These uncontrolled movements can interfere with daily activities and significantly affect quality of life.

A new study published in npj Parkinson’s Disease examined brain activity and sleep patterns in people with Parkinson’s disease to better understand why dyskinesia develops. Researchers compared individuals with early-stage Parkinson’s disease, advanced Parkinson’s without dyskinesia, advanced Parkinson’s with dyskinesia, and healthy adults. Participants wore activity monitors and underwent advanced brain wave testing using electroencephalography (EEG).

The study found that people with dyskinesia showed unique patterns of brain activity, particularly increased theta brain waves in the morning and altered changes in brain activity throughout the day. They also experienced more sleep disturbances than the other groups. Researchers found that higher doses of levodopa were associated with greater changes in these brain wave patterns.

These findings suggest that dyskinesia may be linked to disruptions in how the brain regulates activity during wakefulness and sleep. While more research is needed, identifying these brain activity patterns could eventually help researchers develop new strategies for predicting, monitoring, and treating dyskinesia in Parkinson’s disease. (Nature)
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PUBLISHED RESEARCH

 To ensure we are providing accurate and timely information, we only list articles on studies that are published in peer-reviewed periodicals and provide information to help you live well with PD.  To find additional papers and research CLICK HERE