A system for identifying a remote or polar source associated with a cardiac rhythm disorder, the system comprising: a catheter having a plurality of sensors disposed at multiple locations in relation to a heart to sense cardiac information signals; and a processor interfacing with the plurality of sensors, wherein the processor is configured to: receive cardiac information signals from the sensors of the catheter associated with a patient's heart during the cardiac rhythm disorder; generate a representation using the cardiac information signals received from the sensors by transformation of spline-sensor locations of the catheter to x-y coordinate pairs of locations; characterised in that the processor is further configured to: determine a first offset resulting from a perturbation to corresponding x-y coordinate pairs of locations associated with the representation, the first offset displacing coordinate pairs of sensor locations of the representation at least one unit of displacement in a first direction; and identify the remote or polar source associated with the cardiac rhythm disorder when activations associated with the cardiac information signals rotate in sequence at least once, or emanate centrifugally for at least a first time period, the source being identified based on the representation as displaced. a catheter having a plurality of sensors disposed at multiple locations in relation to a heart to sense cardiac information signals; and a processor interfacing with the plurality of sensors, wherein the processor is configured to: receive cardiac information signals from the sensors of the catheter associated with a patient's heart during the cardiac rhythm disorder; generate a representation using the cardiac information signals received from the sensors by transformation of spline-sensor locations of the catheter to x-y coordinate pairs of locations; characterised in that the processor is further configured to: determine a first offset resulting from a perturbation to corresponding x-y coordinate pairs of locations associated with the representation, the first offset displacing coordinate pairs of sensor locations of the representation at least one unit of displacement in a first direction; and identify the remote or polar source associated with the cardiac rhythm disorder when activations associated with the cardiac information signals rotate in sequence at least once, or emanate centrifugally for at least a first time period, the source being identified based on the representation as displaced. receive cardiac information signals from the sensors of the catheter associated with a patient's heart during the cardiac rhythm disorder; generate a representation using the cardiac information signals received from the sensors by transformation of spline-sensor locations of the catheter to x-y coordinate pairs of locations; characterised in that the processor is further configured to: determine a first offset resulting from a perturbation to corresponding x-y coordinate pairs of locations associated with the representation, the first offset displacing coordinate pairs of sensor locations of the representation at least one unit of displacement in a first direction; and identify the remote or polar source associated with the cardiac rhythm disorder when activations associated with the cardiac information signals rotate in sequence at least once, or emanate centrifugally for at least a first time period, the source being identified based on the representation as displaced. determine a first offset resulting from a perturbation to corresponding x-y coordinate pairs of locations associated with the representation, the first offset displacing coordinate pairs of sensor locations of the representation at least one unit of displacement in a first direction; and identify the remote or polar source associated with the cardiac rhythm disorder when activations associated with the cardiac information signals rotate in sequence at least once, or emanate centrifugally for at least a first time period, the source being identified based on the representation as displaced.