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Chromatic pattern-reversal electroretinograms (ChPERGs) are spared in multiple system atrophy compared with Parkinson’s disease

Neurodegenerative DiseasesNeurobiology Of DiseaseNeurophysiologyMedicineParkinson DiseaseMultiple System AtrophyNeurological DisorderParkinson ’Chromatic Pattern-reversal ElectroretinogramsDegenerative DiseaseSocial SciencesNeurologyNeuroscienceCentral Nervous SystemNeuropathologyNeurological DiseaseMovement Disorders