EMG activities of masticatory muscles during licking in rats☆
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Cited by (36)
Tongue exercise and ageing effects on morphological and biochemical properties of the posterior digastric and temporalis muscles in a Fischer 344 Brown Norway rat model
2018, Archives of Oral BiologyCitation Excerpt :We have demonstrated that tongue exercise increases generative force capacity in the tongue, and induces changes in intrinsic tongue muscle fiber type (Connor et al., 2009; Kletzien et al., 2013; Krekeler & Connor, 2016). Although muscles of the jaw have been shown to co-activate with muscles of the tongue, (Kayalioglu, Shcherbatyy, Seifi, & Liu, 2007; Yamamoto, Matsuo, Fujiwara, & Kawamura, 1982) our previous work demonstrated that tongue exercise did not have a significant impact on masticatory patterns in rats (Krekeler & Connor, 2016). However, It is not known if tongue exercise induces biochemical changes in the muscles of the jaw that were not detected using behavioral measures of mastication.
Unmasking local activity within local field potentials (LFPs) by removing distal electrical signals using independent component analysis
2016, NeuroImageCitation Excerpt :In fact, gamma oscillations attributed to volume-conducted noise that our current study seeks to identify and analytically remove is the same type of noise human ECoG recordings seek to minimize through preprocessing measures, including reformatting ECoG signals to a common average reference to reduce the influence from common distal signal sources (Crone et al., 2006), as well as using EOG and EMG activity to exclude epochs with muscle artifact (Kojima et al., 2013). While our original study did not record EMG activity from orofacial muscles, previous studies have shown that licking in rodents and rabbits is associated with a highly stereotypical pattern of activity involving muscles of the jaw and the tongue, including temporalis, masseter, digastric muscles, and others (Yamamoto et al., 1982; Liu et al., 1998; Kobayashi et al., 2002; Uchida et al., 1994) The tightly coordinated activity of multiple licking-related muscles likely can generate strong dipoles capable of affecting the signals detected at distant electrodes inside the brain. Given that even small movements in humans, such as microsaccades, can generate significant gamma range electrical artifact (Yuval-Greenberg et al., 2008), it is conceivable that the activation of powerful orofacial muscles in rodents can similarly generate electrical artifacts in EEGs and LFPs in the gamma oscillation range.
Differential involvement of two cortical masticatory areas in submandibular salivary secretion in rats
2014, Brain ResearchCitation Excerpt :The characteristics of these two types of jaw movements may resemble those of licking and chewing behaviors. A behavioral study in rats has reported rhythmical jaw movements at about 7 Hz and about 5 Hz when licking water and palatable taste solutions, and chewing food pellets, respectively (Thomas and Peyton, 1983; Yamamoto et al., 1982). The present result shows that flow rates of saliva were similar before and after immobilization of rats.
Effects of lesions of the red nucleus on feeding and drinking in rats
2008, Journal of Oral Biosciences
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Funded in part by Grant-in-Aids for Scientific Research (Nos. 457458 and 56440074) from the Ministry of Education, Science and Culture of Japan.