Abstract: An alterphasic inverting stimulation strategy for use with a multichannel cochlear implant system consumes less power than similar strategies, yet provides better sound quality. The alterphasic inverting strategy is a strategy wherein stimulation pulses are strictly sequential, and wherein the timing and polarity of the channels is chosen such that positive and negative pulses are alternating in time in accordance with a defined pattern that staggers application of the pulses spatially across all the channels and inverts the polarity of pulses that are near each other either spatially or in time.

Abstract: A cochlear implant comprising a storage buffer in which sampling values derived from a sound signal are saved. The storage buffer is connected to a multichannel waveform generator, in which data for a stimulation strategy are saved. Reading and writing to the peak hold buffer occurs asynchronously.

Abstract: An auditive prosthesis, including a cochlear implantable electrode-set applied on a carrier. The electrode-set provides electrical currents for stimulating auditory nerves in the modiolus. The electrode-set having a first series of electrode-poles arranged beside each other and at a predetermined distance of each other along a first longitudinal side of the carrier. Each of the electrode-poles of the first set are individually connected with a signal-generator. The signal-generator is a second electrode-pole connected with a signal-generator. The second electrode-pole is arranged along a second longitudinal side of the carrier and extending over substantially the same distance as the first electrode-poles. The signal-generator is provided for generating signals between selected electrode-poles, electrical field-lines with radial and/or longitudinal components.

Abstract: A system is described for stimulating a nerve or a muscle fibre of a living body including a hearing nerve in the cochlea. The system includes an implant and an electrode for stimulating the nerve or the fibre, which electrode is connected to the implant. To supply electrical power to the implant, a small transformer is used, of which one coil is implanted into the body and the other is outside the body but in the vicinity of the implanted coil. Where the system is used to enhance hearing, the implanted coil is selectively positioned around the auditory duct and the outer coil is inserted into the duct, so that both coils are substantially coaxial. For supplying information to the implant, infrared transmission through the skin is used, wherein the transmitter is provided adjacent to the skin and the receiver on the outside of the body.