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Deep brain stimulation in the globus pallidus externa promotes sleep
1Department of Pharmacology, State Key Laboratory of Medical Neurobiology and Department of Neurobiology, School of Basic Medical Science, Fudan University, Shanghai 200032, China; Department of Neurology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, USA.
Neuroscience
|February 27, 2016
Summary
Deep brain stimulation (DBS) in the globus pallidus externa (GPe) significantly increased sleep in rats. This suggests the GPe may be a target for treating sleep and motor disorders.
Area of Science:
- Neuroscience
- Sleep Medicine
- Neurology
Background:
- The basal ganglia are crucial for motor control, sleep, and behavior.
- Disorders like Parkinson's disease impact sleep, but deep brain stimulation (DBS) can help.
- Previous research suggests dopamine enhances GPe activity, promoting sleep.
Purpose of the Study:
- To investigate if DBS in the globus pallidus externa (GPe) promotes sleep in rats.
- To test the hypothesis that GPe stimulation enhances sleep.
Main Methods:
- Unilateral DBS (180 Hz, 100 μA) was applied to the GPe in rats.
- Sleep was monitored and compared to sham DBS stimulation.
- EEG power spectrum and sleep latency were analyzed.
Main Results:
- GPe DBS significantly increased both non-rapid eye movement and rapid eye movement sleep.
- The EEG power spectrum of DBS-induced sleep resembled baseline sleep.
- DBS did not affect sleep latency.
Conclusions:
- DBS in the GPe effectively promotes sleep in rats.
- The GPe may be a promising target for DBS to treat both insomnia and motor deficits.
- This finding could advance treatments for basal ganglia dysfunction.
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