Response speed measurements on the psychomotor vigilance test: how precise is precise enough?-V44I1 Response speed measurements on the psychomotor vigilance test: how precise is precise enough?-V44I1 Download Magnetic resonance imaging abnormalities as a marker of multiple system atrophy in isolated rapid eye movement sleep behavior disorder-V44I1 Functional organization of the insula in men and women with obstructive sleep apnea during Valsalva-V44I1