Binaural cues, such as interaural time difference (ITD), are pivotal for sound localization in the auditory system. However, contemporary cochlear implant (CI) processors convey only envelope ITD, neglecting pulse-timing ITD in the temporal fine structure, possibly contributing to CI users' spatial hearing challenges.To assess CI-implanted rats' sensitivity to envelope and pulse timing ITD, we utilized a stimulus involving a 900pps pulse train modulated by a 20 Hz sine envelope, allowing independent variation of PT_ITD and ENV_ITD {-0.1, 0, 0.1 ms}. Neural activity from the inferior colliculus (IC) in anesthetized neonatal deafened rats was recorded using a multi-channel silicon probe. Employing a Wiener filter method removed electrical artifacts, and analog multi-unit activity (AMUA) was computed over the onset response window (0-50 ms) and the baseline window (150-200 ms). 332 responsive multi-units, identified by peak amplitude exceeding the average plus 5 times the standard deviation of baseline window AMUA, showed 83% sensitivity to PT_ITD, with only one multi-unit sensitive to ENV_ITD. CI-implanted rats exhibited greater sensitivity to pulse timing ITD, highlighting potential for improved sound localization in CI users with a more effective ITD information strategy.