High-frequency electrical stimulation of cervical vagi reduces airway response to methacholine

Figure 5 Airway and cardiovascular responses to the vagal electrical stimulations after exposure to methacholine aerosal (100 μg/mL per minute for 2 min). n = 8 and 9 in Sal- and Ova-treated guinea pigs; Mean ± SE. ^bP < 0.01, compared to the data before methacholine (MCh) challenge; ^dP < 0.01 LES vs HESs; ^fP < 0.01 between Sal- and Ova-treated groups. MABP: Mean arterial blood pressure; HR: Heart rate; R_L: Total lung resistance; C_dyn: Dynamic pulmonary compliance.