The rostral portion of the ferret suprasylvian sulcus divides somatosensory S1 cortex from the auditory cortical fields of ADF, AVF and AAF. Using multi-channel extracellular recording techniques in anesthetized animals, we found that the lateral bank of rostral suprasylvian sulcus (LRSS) revealed a high proportion (46%; 229/495) of neurons that were responsive to both somatosensory and auditory stimuli (i.e., bimodal). This was consistent with the hypothesis that multisensory convergence occurs at the borders of between adjoining representations of different sensory modalities. However, the vast majority (83.4%; 191/229) of bimodal neurons in LRSS failed to demonstrate response enhancement despite the fact that the stimuli were spatially congruent (presented within their respective receptive fields). Of the bimodal neurons that showed enhancement (16.6%; 38/229), they averaged only a 24% response increase. However, in these tests, the temporal relationship between the stimulus onsets was fixed at 25 ms (auditory 25 ms before somatosensory). Therefore, it seemed possible that these stimuli might not have been presented at the temporal interval appropriate to elicit enhancement. Experiments using stimulus pairings at ±100, 50, 25 and 0 ms onset intervals were then presented, but these temporal combinations similarly failed to elicit the expected levels of multisensory enhancement. Instead it was revealed that some bimodal neurons were preferentially activated by somatosensory stimuli (and others by auditory), and that combining these stimuli often generated a response that was quite similar to the dominant, single-modality response. Given this exhaustive temporal analysis, these data suggest that cortical bimodal neurons might not universally generate enhanced responses to combined-modality stimulation.