Abstract: An insertion device is proposed for implanting a flexible implantable strip in the cortex of a living being in a reliable and accurate manner. The insertion device comprises a wire maintained within a lumen of a penetration member so that a free tip portion configured to engage an anchoring hole of the implantable strip protrudes from a distal end of the penetration member Thanks to reduced dimensions of the tip portion of the wire compared to that of the implantable strip, removing the wire from the lumen results in the implantable strip being released from the penetration member while still adhering to the cortex. The wire may be withdrawn by pulling at an end portion opposite to the tip portion.

Abstract: A modulation device includes at least one memristive device, and a control block, the modulation device having an equivalent conductance yi(t) produced by the at least one memristive device and the control block being configured to receive a clock signal and perform a first modification of the equivalent conductance yi(t) upon receipt of each clock signal, receive an input voltage pulse and perform a second modification of the equivalent conductance yi(t) upon receipt of each input voltage pulse, the first and second modifications being in opposite directions.

Abstract: A method for unsupervised sorting, in real time, of action potentials of biological neurons by a network of artificial neurons including input, intermediate and output layers, the method according to which: the input layer receives an electrical signal measuring an electrical activity of biological neurons, the electrical signal having a variable amplitude as a function of action potentials emitted by the plurality of biological neurons over time; the input layer converts the amplitude of the electrical signal into a train of first spikes; the input layer transmits the train of first spikes to the intermediate layer; the intermediate layer converts the train of first spikes into a train of second spikes; the intermediate layer transmits the train of second spikes to the output layer; as a function of the train of second spikes, the output layer sorts each occurrence of each type of action potential present in the electrical signal.

Abstract: A modulation device includes at least one memristive device, and a control block, the modulation device having an equivalent conductance yi(t) produced by the at least one memristive device and the control block being configured to receive a clock signal and perform a first modification of the equivalent conductance yi(t) upon receipt of each clock signal, receive an input voltage pulse and perform a second modification of the equivalent conductance yi(t) upon receipt of each input voltage pulse, the first and second modifications being in opposite directions.

Abstract: A method for unsupervised sorting, in real time, of action potentials of biological neurons by a network of artificial neurons including input, intermediate and output layers, the method according to which: the input layer receives an electrical signal measuring an electrical activity of biological neurons, the electrical signal having a variable amplitude as a function of action potentials emitted by the plurality of biological neurons over time; the input layer converts the amplitude of the electrical signal into a train of first spikes; the input layer transmits the train of first spikes to the intermediate layer; the intermediate layer converts the train of first spikes into a train of second spikes; the intermediate layer transmits the train of second spikes to the output layer; as a function of the train of second spikes, the output layer sorts each occurrence of each type of action potential present in the electrical signal.

Abstract: The invention relates to an implant which includes, in order to electrically stimulate a nerve structure, in particular the retina, an electrically insulating substrate (1), a array of recesses (2) formed in an upper surface of the substrate, stimulation electrodes (3) arranged at the bottom of the recesses, and an electrically conductive layer forming a ground plane (4) at the upper portion of the recesses. The sizes of the recesses and of the electrodes of the implant are such that the spatial selectivity of the stimulation current applied to the nerve structure is maximized.

Abstract: The invention relates to an implant which includes, in order to electrically stimulate a nerve structure, in particular the retina, an electrically insulating substrate (1), a array of recesses (2) formed in an upper surface of the substrate, stimulation electrodes (3) arranged at the bottom of the recesses, and an electrically conductive layer forming a ground plane (4) at the upper portion of the recesses.

Abstract: The disclosure relates to a device for stimulating living tissue, comprising an array of stimulating microelectrodes that are placed in a defined configuration side by side and able to be selected by applying an electrical signal for stimulation by one of the microelectrodes. According to the disclosure, an additional conducting surface for application against the living tissue, is provided in the vicinity of a defined plurality of sections for local application of microelectrodes, connecting structures being provided for electrical connection between the zones, and the additional conducting surface being also connected to a lead and being formed so as to ensure local stimulation via a microelectrode.

Abstract: The disclosure relates to a device for stimulating living tissue, comprising an array of stimulating microelectrodes that are placed in a defined configuration side by side and able to be selected by applying an electrical signal for stimulation by one of the microelectrodes. According to the disclosure, an additional conducting surface for application against the living tissue, is provided in the vicinity of a defined plurality of sections for local application of microelectrodes, connecting means being provided for electrical connection between the zones, and the additional conducting surface being also connected to a lead and being formed so as to ensure local stimulation via a microelectrode.