Application of EMF to both cervical vagal trunks induced a progressive increase in atrial fibrilation threshold at all pulmonary vein and atrial sites, while in the application of EMF across the chest the atrial effective refractory period progressively shortened and the effective refractory period dispersion and window of vulnerability progressively increased. In all cases the frequency and amplitude of the neural activity recorded from the anterior right ganglionated plexi was markedly suppressed. They mention that the frequency is a very important parameter because in the experiments a little variation in frequency can provoke the fading of the effect, this is a symptom of that it's a resonance phenomena. |
Last modified on 18-Mar-16 |