Show Summary Details
Page of

Brainstem myoclonus and startle syndromes 

Brainstem myoclonus and startle syndromes
Brainstem myoclonus and startle syndromes

Ivan Donaldson

, C. David Marsden

, Susanne A. Schneider

, and Kailash P. Bhatia

Page of

PRINTED FROM OXFORD MEDICINE ONLINE ( © Oxford University Press, 2022. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a title in Oxford Medicine Online for personal use (for details see Privacy Policy and Legal Notice).

date: 03 July 2022

Focal myoclonus arising in the spinal cord and cerebral cortex was described in Chapter 29. The only form of focal myoclonus arising in the brainstem that was referred to was palatal myoclonus (also referred to as palatal tremor). There are, however, entirely different types of myoclonus that arise from the brainstem reticular formation, which take the form of generalized, predominantly axial body jerks. Two types have been identified: 1 Brainstem reticular myoclonus, in which jerks occur spontaneously and can be triggered by external stimuli (brainstem reticular reflex myoclonus).

2 Exaggerated startle syndromes, in which the myoclonus is precipitated by sudden external stimuli such as a noise, a flash of light, or a touch to the body. These are the topics of this chapter.

Access to the complete content on Oxford Medicine Online requires a subscription or purchase. Public users are able to search the site and view the abstracts for each book and chapter without a subscription.

Please subscribe or login to access full text content.

If you have purchased a print title that contains an access token, please see the token for information about how to register your code.

For questions on access or troubleshooting, please check our FAQs, and if you can't find the answer there, please contact us.