An embodiment of the present invention takes masking effects into
consideration when determining stimulations signals for neural
stimulation. These masking effects may be modeled using user-specific
models determined by taking measurements for an implant system of an
implant recipient. Or, the model may correspond to a group of individuals
sharing a common characteristic or the population as a whole. These
models may be, for example, psycho-physical or electrophysiological
models.