Opsoclonus or ocular flutter #Opsoclonus and ocular #flutter are saccadic intrusions characterized by bursts of involuntary, back-to-back saccades without an intersaccadic interval. The oscillations are termed ocular flutter when they exist in the horizontal plane only and opsoclonus whey they are multidirectional in horizontal, vertical, and torsional planes. Ocular flutter is one of the manifestations of serotonin syndrome. The typical clinical manifestations include changes in : 1. mental sta