Nonepileptic Head Drops

Nonepileptic head drops are characterized by there being no difference in the speed of the initial flexion of the neck and the subsequent extension (141). These authors found that repetitive head-nods, which they described as bobs (in which the velocity of recovery matched that of descent) and in which the episodes were repeated (bobbing), were a consistent feature of nonepileptic head-drops. Defining epileptic nods as those accompanied by epileptic scalp EEG discharges, they found that head-bobbing did not occur as an epileptic phenomenon.

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