Monitoreo del proceso de masticación mediante sensores de  fotopletismografía: estudio de factibilidad.

Escobar Manrique, Santiago; Gordon Uribe, Werner

Monitoreo del proceso de masticación mediante sensores de fotopletismografía: estudio de factibilidad.

dc.contributor.advisor	Arguello Prada, Erick Javier (Asesor)
dc.contributor.author	Escobar Manrique, Santiago
dc.contributor.author	Gordon Uribe, Werner
dc.date.accessioned	2026-06-02T20:29:59Z
dc.date.available	2026-06-02T20:29:59Z
dc.date.issued	2026
dc.description.abstract	Mastication is an essential function in the digestive and orofacial system, understood as the coordinated activity of the facial muscles and structures involved in chewing, swallowing, and mandibular posture, making it relevant to explore non-invasive methods that allow its evaluation with greater comfort and accuracy. This study assessed the feasibility of using photoplethysmography (PPG) sensors to record mandibular movements during the chewing process. An experimental setup was designed with two PPG sensors positioned on the chin and the temporomandibular joint (TMJ), along with a reference electromyography (EMG) sensor placed on the masseter muscle. Data was collected from twenty-four participants while they chewed foods of different textures, including controlled intervals of rest and speech. The signals were filtered, normalized using a robust z-score, and analyzed through non-parametric Kruskal–Wallis and Dunn-Šidák tests. The results showed that the chin PPG channel partially reflected changes related to mandibular movement, although no statistically significant differences were found between chewing and resting phases. In contrast, the EMG signal displayed clear variations among conditions, confirming its sensitivity to muscle effort. These findings suggest that, while PPG does not yet allow precise discrimination of masticatory events, its behavior demonstrates the technical feasibility of this approach and its potential for future applications in portable orofacial monitoring systems aimed at detecting speech and chewing patterns.
dc.format	application/pdf
dc.format.extent	20 Páginas
dc.identifier.citation	Escobar Manrique, S. Escobar Manrique, S. (2026). Monitoreo del proceso de masticación mediante sensores de fotopletismografía: estudio de factibilidad. Universidad Santiago de Cali.
dc.identifier.uri	https://repositorio.usc.edu.co/handle/20.500.12421/9400
dc.language.iso	es
dc.publisher	Universidad Santiago de Cali
dc.publisher.faculty	Facultad de Ingeniería
dc.publisher.program	Bioingeniería
dc.pubplace.city	Cali
dc.pubplace.state	Valle del Cauca
dc.rights.acceso	Acceso Abierto
dc.rights.cc	Reconocimiento 4.0 Internacional (CC BY 4.0)
dc.rights.uri	https://creativecommons.org/licenses/by/4.0/
dc.source.institution	Universidad Santiago de Cali
dc.source.repository	Repositorio Institucional USC
dc.subject.keyword	Photoplethysmography
dc.subject.keyword	Electromyography
dc.subject.keyword	Mastication
dc.subject.keyword	Orofacial monitoring
dc.title	Monitoreo del proceso de masticación mediante sensores de fotopletismografía: estudio de factibilidad.
dc.type	Thesis
dc.type.spa	Investigación