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Bilateral cochlear implantation is increasingly becoming the standard in the clinical treatment of bilateral deafness. The main motivation is to provide users of bilateral cochlear implants (CIs) access to binaural cues essential for localizing sound sources and understanding speech in environments of interfering sounds. One of those cues, interaural level differences, can be perceived well by CI users to allow some basic left versus right localization. However, interaural time differences (ITDs) which are important for localization of low-frequency sounds and spatial release from masking are not adequately represented by clinical envelope-based CI systems. Here, we first review the basic ITD sensitivity of CI users, particularly their dependence on stimulation parameters like stimulation rate and place, modulation rate, and envelope shape in single-electrode stimulation, as well as stimulation level, electrode spacing …