| 摘要 |
There is provided a system comprising a device (10) for neural stimulation of a cochlea (200) of a patient's ipsilateral ear, a device (21) for acoustic stimulation of the contralateral ear, and a fitting device (13) for adjusting at least the neural stimulation device according to a perceptual behavioral response of the patient (17) to combined neural stimulation of the cochlea at the ipsilateral ear and acoustic stimulation of the contralateral ear; the neural stimulation device comprising means (20) for providing an input audio signal; a sound processor (24) for generating a neural stimulation signal from the input audio signal; and a cochlear implant stimulation arrangement (14, 19) comprising a plurality of stimulation channels for stimulating the cochlea at various stimulation sites according to a neural stimulation signal, with each stimulation channel being attributed to a certain one of the stimulation sites; the acoustic stimulation device comprising a loudspeaker (23) to be worn at the contralateral ear or in at least in part the ear canal of the contralateral ear for acoustically stimulating the contralateral ear according to an input audio signal, the fitting device comprising a signal generator cooperating with the neural stimulation device and with the acoustic stimulation device in order to generate, in a synchronized manner, a probe neural stimulation signal to be supplied to the cochlear implant stimulation arrangement for causing stimulation of the cochlea within a region around a selected one of the stimulation sites and a notch acoustic broadband masking signal be supplied to the loudspeaker, with the notch acoustic broadband masking signal including a notch frequency region having a noise level below a masking level at which masking of the probe neural stimulation signal begins and with the noise level outside the notch frequency region being above the masking level, a unit (25) for recording the perceptual behavioral response of the patient to the synchronized neural stimulation of the cochlea with the probe neural stimulation signal and the notch acoustic broadband masking signal, and a unit for programming the neural stimulation device according to the recorded perceptual response. |
