Imagine your brain is a bustling city, with different neighborhoods and connections between them. In Parkinson’s disease (PD), excessive daytime sleepiness (EDS) is a common issue that scientists are still trying to understand. This study used resting-state functional magnetic resonance imaging (rs-fMRI) to analyze the changes in brain activity in PD patients with EDS compared to those without sleepiness. They found that there were differences in the neuronal activity of specific brain regions, such as the Cingulum-Ant-R, Putamen-R, and Thalamus-L. These regions showed altered fractional amplitude of low-frequency fluctuation (fALFF) and functional connectivity, meaning their activity levels and connections with other brain areas were abnormal. Interestingly, some regions showed increased connectivity with the medial frontal gyrus, superior temporal gyrus, insular, and precuneus, while others showed decreased connectivity with the cerebellum, temporal gyrus, hippocampus/parahippocampal gyrus, cingulate gyrus, and middle occipital gyrus. These findings suggest that EDS in PD may be linked to changes in brain activity and connections. To dive deeper into the research and explore all the fascinating details, check out the full article!
BackgroundExcessive daytime sleepiness (EDS) is one of the most important non-motor symptoms of Parkinson’s disease (PD), and its neuropathologic basis is still unclear.ObjectiveThis study investigated the changes of neuronal activity in PD patients with EDS (PD-EDS) in the resting state.MethodsForty-three PD patients were recruited and divided into the PD-EDS group (n = 21) and PD-NEDS group (PD patients without excessive daytime sleepiness, n = 22) according to the Epworth sleepiness scale (ESS) scores. Patients in both groups received resting-state functional magnetic resonance imaging (rs-fMRI). The differences in fractional amplitude of low-frequency fluctuation (fALFF) between the two groups, correlations between fALFF and ESS, and functional connection (FC) between the brain regions with different fALFF values and the whole brain were analyzed.ResultsPD-EDS patients exhibited a decreased fALFF in the Cingulum-Ant-R, but an increased fALFF in the Putamen-R and Thalamus-L when compared with PD-NEDS patients; an increased functional connectivity between these three seed regions with different fALFF values and the right medial frontal gyrus, bilateral superior temporal gyrus, left insular, and right precuneus was observed (p < 0.05), but a deceased functional connectivity between these three seed regions and the right cerebellum anterior lobe/right brainstem, right middle temporal gyrus and inferior temporal gyrus, right hippocampus/parahippocampal gyrus, right medial cingulate gyrus and bilateral middle occipital gyrus was observed (p < 0.05). The value of fALFF was negatively correlated with the ESS score in the Cingulum-Ant-R, but positively correlated with the ESS score in the Putamen-R and Thalamus-L.ConclusionsEDS in PD patients may be associated with changes in brain neuron activity and functional connectivity.
Dr. David Lowemann, M.Sc, Ph.D., is a co-founder of the Institute for the Future of Human Potential, where he leads the charge in pioneering Self-Enhancement Science for the Success of Society. With a keen interest in exploring the untapped potential of the human mind, Dr. Lowemann has dedicated his career to pushing the boundaries of human capabilities and understanding.
Armed with a Master of Science degree and a Ph.D. in his field, Dr. Lowemann has consistently been at the forefront of research and innovation, delving into ways to optimize human performance, cognition, and overall well-being. His work at the Institute revolves around a profound commitment to harnessing cutting-edge science and technology to help individuals lead more fulfilling and intelligent lives.
Dr. Lowemann’s influence extends to the educational platform BetterSmarter.me, where he shares his insights, findings, and personal development strategies with a broader audience. His ongoing mission is shaping the way we perceive and leverage the vast capacities of the human mind, offering invaluable contributions to society’s overall success and collective well-being.
