Knobler R L, Somasundaram M, Schutta H S
Ann Neurol. 1981 Feb;9(2):194-7. doi: 10.1002/ana.410090216.
A new form of abnormal spontaneous eye movement termed inverse ocular bobbing is described. It consists of a slow downward eye movement followed by delayed quick return upward to midposition. It is contrasted with other types of abnormal vertical eye movements.