Swallowing is a motor process with several discordances and a very difficult neurophysiological study. Maybe that is the reason for the scarcity of papers about it.
It is to describe the chewing neural control and oral bolus qualification. A review the cranial nerves involved with swallowing and their relationship with the brainstem, cerebellum, base nuclei and cortex was made.
From the reviewed literature including personal researches and new observations, a consistent and necessary revision of concepts was made, not rarely conflicting.
RESULTS AND CONCLUSION
Five different possibilities of the swallowing oral phase are described: nutritional voluntary, primary cortical, semiautomatic, subsequent gulps, and spontaneous. In relation to the neural control of the swallowing pharyngeal phase, the stimulus that triggers the pharyngeal phase is not the pharyngeal contact produced by the bolus passage, but the pharyngeal pressure distension…
COSTA, Milton Melciades Barbosa. (2018). NEURAL CONTROL OF SWALLOWING. Arquivos de Gastroenterologia, Epub August 23, 2018.