Fig. 1
From: Monitoring mandibular movements to detect Cheyne-Stokes Breathing
Measuring the mandibular movements and definition of periodic MML and MMS. a Forehead sensor, b Chin emitter, d is a distance between emitter and sensor, d0: offset level, Δd: variation of distance d when the mouth opens. CSB: Cheyne-Stokes breathing highlighted by a flow typical crescendo –decrescendo pattern of at least 5 respirations; SPM: periodic sharp mandibular movements occurring on cortical arousals during the hyperventilation phase (these are unevenly observed); LPM: periodic large mandibular movements accompanying the changes in flow during the hyperventilation phase