Fig. 7
From: Optogenetic activation of serotonergic neurons changes masticatory movement in freely moving mice
Optogenetic activation of ROb 5-HT neurons does not involve coordination between masseter and digastric muscle activity during voluntary mastication. (a) Representative circular plots showing the relative burst phases recorded from the masseter muscles relative to the digastric muscles. The black dots on each circle indicate the phase shift between the corresponding RMS peak of the masseter-digastric muscle activity alternation after yellow (left) or blue (right) light application. Black straight lines indicate mean coordination r-vectors. (b) Circular plot summary showing the phasing of all five animals. Gray and straight red lines indicate the mean coordination r-vectors for individual animals and animal groups, respectively. Comparisons with n.s. have P > 0.05 and are considered not significant. The Watson–Williams test for phase comparisons did not show any statistically significant differences between the application of yellow and blue light for individual animals.
