Loading...
Please wait, while we are loading the content...
Similar Documents
Bilateral experimental muscle pain changes electromyographic activity of human jaw-closing muscles during mastication
| Content Provider | Semantic Scholar |
|---|---|
| Author | Svensson, Peter O. Houe, Lars Arendt-Nielsen, Lars |
| Copyright Year | 1997 |
| Abstract | Abstract The effects of bilateral experimental muscle pain on human masticatory patterns were studied. Jaw movements and electromyographic (EMG) recordings of the jaw-closing muscles were divided into multiple single masticatory cycles and analyzed on a cycle-by-cycle basis. In ten men simultaneous bilateral injections of hypertonic saline (5%) into the masseter muscles caused strong pain (mean±SE: 7.5±0.4 on a 0–10 scale), significantly reduced EMG activity of jaw-closing muscles in the agonist phase, and significantly increased EMG activity in the antagonist phase. Nine of the subjects reported a sensation of less intense mastication during pain. Injections of isotonic saline (0.9%) did not cause pain or significant changes in masticatory patterns. The influence of higher brain centers on conscious human mastication can not be discarded but the observed phase-dependent modulation could be controlled by local neural circuits and/or a central pattern generator in the brain stem which are capable of integrating bilateral nociceptive afferent activity. |
| Starting Page | 182 |
| Ending Page | 185 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/PL00005738 |
| PubMed reference number | 9305827 |
| Journal | Medline |
| Volume Number | 116 |
| Alternate Webpage(s) | https://page-one.springer.com/pdf/preview/10.1007/PL00005738 |
| Alternate Webpage(s) | https://doi.org/10.1007/PL00005738 |
| Journal | Experimental Brain Research |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
