Cranial polyneuropathies in multiple sclerosis: case report and literature review.

Although cranial neuropathies are common disorders in multiple sclerosis patients, multiple cranial nerve involvement is an unusual occurrence. Correlation of clinical symptoms with magnetic resonance imaging evidence of demyelinating central nervous system lesions can confirm the diagnosis. The authors report on the case of a 43-year-old woman who initially was thought to have suffered a brainstem infarct but, in fact, had developed multiple cranial nerve functional deficits.

The effects of linear acceleration on distortion product otoacoustic emissions in human ears.

Background: The effect of high levels of linear acceleration (G) on the cochlea has never been studied prospectively.

Hypothesis: Linear acceleration at high levels has no effect on the human cochlea as demonstrated by a comparison of pre- and post-exposure measurements.

Methods: There were 22 healthy volunteers who underwent exposure to up to 9 G in a military aviation training centrifuge.