No abstract available
MeSH terms
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Acetylcholine / physiology*
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Aged
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Brain Chemistry / physiology
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Brain Mapping / methods*
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Female
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Humans
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Male
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Middle Aged
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Parkinson Disease / physiopathology*
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Supranuclear Palsy, Progressive / diagnostic imaging
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Supranuclear Palsy, Progressive / physiopathology*
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Tomography, Emission-Computed*