Edited by R.W. Baloh and V. Honrubia (Pp 408, US$98.50). Published by Oxford University Press, New York, 2001. ISBN 0-19-513982-8.

• book review
• clinical neurophysiology

• proteases
• neurodegenerative disease

The first edition of Clinical neurophysiology of the vestibular system, published in 1979, had a significance beyond its content: it affirmed that neurology had a stake in the vestibular system. Here was a neurologist (Baloh) writing with an otolaryngologist (Honrubia) about semicircular canals, endolymph, audiograms, and above all the vestibulo-ocular reflex—the “VOR”. The VOR is no ordinary reflex; one can measure accurately both its input and its output and come up with a transfer function for gain—a new concept then for neurology. We have learnt a lot more about measurement of vestibular …