1.   Clonic refers to repetitive rhythmical involuntary muscle contractions.

2.   Besides hemifacial spasm, botox can help other diseases, including ones that involve involuntary muscle contractions or spasms.

3.   But in addition to limiting patients physically, the devices sometimes caused burns, involuntary muscle contractions and sometimes intolerable pain.

4.   Drugs can control involuntary muscle twitching, disabling muscle cramps and excess salivation.

5.   In the case of singing, add the arcane metaphysics of voice production, a process requiring mazelike self-analysis and involving involuntary muscle functions.

6.   Involuntary muscles are not as willing as voluntary ones.

7.   Often, some of the muscle fibers shrink in response to repeated injections and then a new pattern of involuntary muscle activity kicks in, according to Ravin.

8.   REM sleep is characterized by dreaming, lack of muscle tone, and involuntary muscle twitches.

9.   The process appears to override or block the brain signals that cause the involuntary muscle movements known as tremors, researchers said.