Peter Issing

Learn More
OBJECTIVE The concept and design of new cochlear implant electrodes is a challenging process. To evaluate new electrode designs, we present a study that uses a microgrinding procedure to evaluate damage to the microstructures of the cochlea resulting from the insertion procedure. In this study, we compared different insertion techniques with the Contour(More)
HYPOTHESIS It was postulated that an electrode array that achieved a close modiolar proximity would result in reduced threshold levels and amplitude slopes, as measured with electrically evoked auditory brainstem responses (EABRs). BACKGROUND Quality and quantity of auditory information transmitted by a cochlear implant to patients with sensorineural(More)
OBJECTIVE To investigate the effect of chronic electrical stimulation in acoustically deprivated animals during maturation. MATERIALS AND METHODS Latencies of EABR measurements from acoustically deprivated and acoustically deprivated, but electrically stimulated animals were compared with ABR from normal hearing cats. In addition, morphological analyses(More)
OBJECTIVE To increase the number of intracochlear electrodes that may be inserted into a totally obliterated cochlea, a special implant has been developed in collaboration with Cochlear Limited. This implant features two separate electrode carriers containing 11 and 10 active electrodes, respectively, as well as a reference electrode located on the(More)
Anatomical measurements are made on the clivus and the upper cervical column. These values are important for transoral, transpalatinal approaches to the clivus and to atlas and axis. The mean-values of the length of clivus in adults were 45 mm on the internal cranial base, on the external the length between the basion and the vomer was estimated with 27.9(More)
OBJECTIVE To investigate the efficacy of short-term electrical stimulation with different human electrodes using high stimulation rates and different electrode designs. MATERIALS AND METHODS Human electrodes of two different designs were implanted in cats, and electrically evoked auditory brain stem responses (EABR) were recorded. RESULTS AND DISCUSSION(More)