Figure 1. (A) Location of sensors on laryngeal mask airway (corresponding area):(a) tube-cuff junction;(b) the posterior tip of cuff (hypopharynx);(c) anterior middle part of the cuff side (pyriform fossa);(d) the backplate (posterior pharynx);(e) anterior base of cuff (base of tongue);(f) distal posterior tube (distal oropharynx); and (g) proximal posterior tube (proximal oropharynx). (B) Location of sensors on intubating laryngeal mask (corresponding area):(a) tube-cuff junction;(b) the posterior tip of cuff (hypopharynx);(c) anterior middle part of the cuff side (pyriform fossa);(d) the backplate (posterior pharynx);(e) anterior base of cuff (base of tongue);(f) distal posterior tube (distal oropharynx); and (g) proximal posterior tube (proximal oropharynx).