Brain signal telemetry and seizure prediction

An apparatus comprising:

• a plurality of electrode assemblies, each electrode assembly including:
• at least one electrode, configured to be coupled to a brain of a subject;
• a brain signal sense amplifier circuit, coupled to the electrode, and configured to sense an intrinsic brain signal and to output a resulting sensed brain signal that is indicative of the intrinsic brain signal;
• a filter circuit, coupled to the sense amplifier circuit, the filter circuit including a user-programmable frequency filtering characteristic configured to allow a user to select between at least two of:
• (1) passing neural action potential frequencies;
• (2) passing neural field potential frequencies;
• and (3) passing both neural action potential and neural field potential frequencies;
• an analog-to-digital converter (“ADC”) circuit, coupled to the filter circuit, the ADC circuit configured to digitize brain signal information passed by the filter circuit, the digitizing occurring in close proximity to the electrode;
• an ambulatory memory device, configured to store brain signal information;
• an ambulatory signal processor circuit, coupled to the electrode assemblies, the signal processor circuit including:
• a digital multiplexer circuit, coupled to the electrode assemblies, and configured to multiplex data from different electrode assemblies together into a multiplexed data stream;
• a transceiver circuit, configured to communicate information to a remote transceiver;
• and
• a controller circuit, configured to control the digital multiplexer to permit a user to control:
• which electrodes contribute data to the multiplexed data stream;
• a data resolution of each electrode contributing data to the multiplexed data stream;
• whether a particular electrode's data contribution to the multiplexed data stream is at least one of:
• provided to the transmitter for communication to the remote receiver or provided to the ambulatory memory device for storage;
• and
• whether data contributed by a particular electrode includes a user-selected one of:
• (1) neural action potential data, from which neural field potential data has been reduced or removed;
• (2) neural field potential data, from which neural action potential data has been reduced or removed;
• and (3) both neural action potential and neural field potential data.

An apparatus comprising:

• ambulatory means for acquiring brain signals at different locations of a subject's brain;
• and
• ambulatory means for receiving information from user input to control:
• which locations contribute data to a monitored data stream;
• a data resolution of the locations that contribute data to the monitored data stream;
• and whether data contributed by a particular location includes a user-selected one of:
• (1) neural action potential data, from which neural field potential data has been reduced or removed;
• (2) neural field potential data, from which neural action potential data has been reduced or removed;
• and (3) both neural action potential and neural field potential data.

A method comprising:

• acquiring brain signals at different locations of an ambulatory subject's brain;
• receiving, at the ambulatory subject, information from user input to control:
• which locations contribute data to a monitored data stream;
• a data resolution of the locations that contribute data to the monitored data stream;
• and whether data contributed by a particular location includes a user-selected one of:
• (1) neural action potential data, from which neural field potential data has been reduced or removed;
• (2) neural field potential data, from which neural action potential data has been reduced or removed;
• and (3) both neural action potential and neural field potential data.