Abstract: Systems and methods for providing brain stimulation (e.g., deep brain stimulation) are provided. A brain stimulation method includes applying a first magnetic field at a first location external of a brain, the first magnetic field having a waveform of a first frequency. The method further includes applying a second magnetic field at a second location external of the brain, the second magnetic field having a waveform of a second frequency. The second frequency is different from the first frequency such that temporal interference is generated at a focal point internal to the brain.

Abstract: Disclosed is an implantable system that comprises a magnetoelectric (ME) antenna, a radio frequency rectifier, and a transmitter. The ME antenna may be characterized by a resonance frequency that changes according to an ambient magnetic field strength. The radio frequency rectifier may be configured to convert radio frequency energy, received by the ME antenna, into a direct current voltage, and to direct the direct current voltage to a storage capacitor. The transmitter may be configured to apply a transmission signal to the ME antenna. A transceiver may communicate with one or more of the implantable systems, to provide radio frequency energy to the implantable devices for energy harvesting, and to receive transmitted information from the implantable systems. The implantable system may be disposed within a brain to detect neuronal activity, by detecting small magnetic fields generated by such neuronal activity.

Abstract: A method of stimulating a neural cell may comprise disposing a neural stimulation probe substantially adjacent to the neural cell, and applying a signal to the neural stimulation probe. The neural stimulation probe may comprise a micro-coil, an input lead, an output lead, and a magnetic core. The micro-coil may comprise N of windings having a first end and a second end, with the input lead electrically coupled to the first end and the output lead coupled to the second end. The micro-coil may have a width that is less than or equal to 40 ?m, a thickness of less than or equal to 20 ?m, and a length of less than or equal to 80 ?m. The magnetic core may be disposed such that the N windings are wrapped about the magnetic core. The micro-coil may be configured and arranged to generate a E-field gradient in the direction of the neural cell.