Among the cardinal PD motor features, rigidity, and bradykinesia could possibly respond better to STN than GPi stimulation; levodopa responsive gait and balance issues appeared to improve better with GPi stimulation in one of the trials, which also showed a trend toward more pronounced and sustained dyskinesias reduction after GPi than STN stimulation ( 45 ).
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Mood Effects After Deep Brain Stimulation for Parkinson's Disease: An Update.
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