ABSTRACT
This section provides a review of the methods and sensor systems used for characterization of food intake using chewing and swallowing. The chewing sensors have been monitored using a variety of sensor modalities for the detection of swallowing, including acoustical, electromechanical, magnetic, bioelectric, and other sensors. Chewing and swallowing can be measured by a variety of different sensors that rely on capturing various manifestations of the ingestion process such as sounds, muscle activity, motion, and others. The first and most fundamental task that is accomplished by the chewing sensors is measurement of the physical and/or physiological phenomena that accompany the chewing process. The chapter introduces the various sensor modalities for chewing detection. During chewing, the mandible movement is controlled by the temporalis, masseter, and pterygoid muscles. Jaw motion during chewing can also be monitored by placing accelerometer on the temporalis muscle or accelerometer attached to the temple of the glasses.
