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There is a dense serotonergic projection from nucleus raphe pallidus and nucleus raphe obscurus to the trigeminal motor nucleus and serotonin exerts a strong facilitatory action on the trigeminal motoneurons. Some serotonergic neurons in these caudal raphe nuclei increase their discharge during feeding. The objective of the present study was to investigate the possibility that the activity of these serotonergic neurons is related to activity of masticatory muscles. Cats were implanted with microelectrodes and gross electrodes. Caudal raphe single neuron activity, electrocorticographic activity, and splenius, digastric and masseter electromyographic activities were recorded during active behaviors (feeding and grooming), during quiet waking and during... |
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Palavras-chave: Masticatory muscles; Serotonergic neurons; Caudal raphe nuclei; Feeding behavior; Grooming behavior. |
Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000100013 |
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Borie,Eduardo; Orsi,Iara Augusta; Muñoz,Gonzalo; de Souza,Luiz Gustavo; del Sol,Mariano. |
To validate the virtual finite element analysis (FEA) results, it is needed that the mathematical models take into account the insertion area. Thus, the aim of this study was to measure the insertion area of masticatory muscles in the mandible in human cadavers to be used in FEA. The insertion area of the masticatory mandible's muscles was measured on both sides of fifty human cadavers throughout digital photos and software. The insertion area of the masseter was 7.47(±0.41) cm2, the temporal (inner portion) was 3.05(±0.13) cm2, the temporal (outer portion) was 2.25(±0.28) cm2, the medial pterygoid was 2.2(±0.23) cm2, and the lateral pterygoid was 0.8(±0.05) cm2. In conclusion, there is enough data to be used for the finite element analysis. |
Tipo: Journal article |
Palavras-chave: Masticatory muscles; Insertion area; Finite element analysis. |
Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000400031 |
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