Early deaf human CI users are often insensitive to sub-millisecond interaural time differences (ITDs); however, with synchronized CIs, early deafened rats learned to lateralize small ITDs near 50 µs.
Softer sound appears closer to midline than louder sound, conflicting with a labelled-line representation of auditory space and supporting the idea that humans use rate coding when calculating sound directionality.
Computer simulations of interaural time difference decoders show that heterogeneous tuning of binaural neurons leads to accurate sound localization in natural environments.
Principal neurons of the brainstem nucleus comparing sound level at the two ears do not have the slow response properties previously attributed to them, but are instead specialized for fast weighing of excitation and inhibition.
Complementary neural codes in frontal and visual cortex support a role for feedback signals in the representation and recognition of partially occluded objects.