1. A non-transitive, computer-readable storage device for storing data that when executed by a processor, perform a method, comprising: determining a first body index indicative of an epileptic activity in a patient; monitoring a second body index different from the first body index, in response to said determining; detecting an indication of epileptic activity spread in a brain of the patient, based upon at least said second body index, comprising determining a spread quotient relating to said epileptic event, said spread quotient comprising information relating to at least one or more of a probability of a spread of said epileptic activity, a speed of said spread of said epileptic activity, a location of said epileptic activity, or a direction of said spread of said epileptic event; and taking a responsive action in response to said detecting, wherein said responsive action is selected from delivering a therapy to at least one neural structure of said patient, modifying a therapy to at least one neural structure of said patient, logging said indication of spread, or warning said patient, a caregiver, or a medical professional of said indication of spread.