Electroencephalogram rhythmic and arrhythmic spectral components and functional connectivity at resting state may predict the development of synucleinopathies in idiopathic rapid eye movement sleep behavior disorder.

Although not reaching significance, patients who converted showed a trend towards lower alpha rhythmic power in F3 (converters: 22.79 ± 1.20; non-converters: 27.32 ± 1.56; p = .07), O1 (converters: 35.21 ± 2.56; non-converters: 41.86 ± 2.19, p = .085) and O2 (converters: 35.76 ± 2.60; non-converters: 42.82 ± 2.23, p = .06).

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