Perturbations both trigger and delay seizures due to generic properties of slow-fast relaxation oscillators
Fig 5
Relationship between the curvature of isochrons and the values for the slow vector field.
For the phenomenological epilepsy model (7) with the set of parameters in (8) the figure shows: (A) Limit cycle Γpheno and its isochrons
(left). (B) Values of the slow vector field (corresponding to
in (7)) for points
.