Myoclonus, anyone?

[Peter Vollrath]

Myoclonus is a twitching or spasm of a group of muscles.  Sorry to state 
what you so obviously know, but we want to be discussing the same thing.

Palatal myoclonus (often just called myoclonus) is a problem that 
involves the paramedian branches of the Superior pontine, a nucleus in 
the medulla.  Structures involved I would suspect to be arcuate fibres.

Hope this helps.