Cochlear Implant Electrostimulation and the Influence on the Vestibular Organ

"* examination and documentation of vital signs and concomitant medication~* application of an cochlea implant loan processor (external body surface) with varying stimulus pattern for vestibular stimulation by means of basal, medial and apical electrodes~* attraction of an special mask to determine the subjective visual vertical (SVV)~* assessment of the vertical spatial axis with all electrodes turned off~* assessment of the vertical spatial axis with all electrodes turned on~* assessment of the vertical spatial axis while using basal (12-16) and medial (6-11) electrodes~* assessment of the vertical spatial axis while using basal (12-16) and apical (1-5) electrodes~* assessment of the vertical spatial axis while using medial (6-11) and apical (1-5) electrodes"