Methods and systems for lead movement detection and response in dbs therapy

A system for determining if an electrode lead has moved in a deep brain stimulation (DBS) patient having one or more electrode leads implantable in their brain, wherein each electrode lead comprises a plurality of electrode contacts, the system comprising:

• control circuitry configured to execute a method comprising:
• at a first time, providing a first stimulation to the patient using a first stimulation location upon the electrode lead,
• recording first evoked potentials (EPs) evoked by the first stimulation,
• extracting and storing first one or more values for one or more features of the first EPs,
• at a second time, providing a second stimulation to the patient using the first stimulation location upon the lead,
• recording second EPs evoked by the second stimulation,
• extracting second one or more values for the one or more features of the second EPs,
• comparing the first and second one or more values to determine if the lead has moved between the first and second times.

A method for assisting a user to optimize an electrode lead configuration for providing deep brain stimulation (DBS) for a patient using an electrode lead implantable in the patient's brain, wherein the electrode lead comprises a plurality of electrode contacts, the method comprising:

• receiving parameters specifying a first stimulation location on the lead at which to provide stimulation, wherein the first stimulation location was previously determined,
• receiving a first one or more values for one or more features extracted from recorded first evoked potentials (EPs) evoked by previous stimulation at the first location,
• providing stimulation to the patient using the first stimulation location and recording second EPs evoked by the stimulation,
• extracting a second one or more values for the one or more features from the second EPs, and
• comparing the first and second one or more values to determine if the lead has moved since the first stimulation location was previously determined.