MYH14 and atrial fibrillation: To address these shortcomings in our model, next we decided to include differences in actin-myosin network distribution across AF and RF which we inferred from traction distribution differences between AF and RF (Fig 2o), by incorporating different spatial variations in kc (xc), ηc(xc) and εcth(xc) for connected and disconnected conditions (Fig 9a–9c).