An area in the Sylvian fissure is the first place where auditory signals from the cochlea reach the cerebral cortex. This part of the cortex (primary auditory cortex) is involved in hearing. Other areas of the temporal lobes are involved in high-level auditory processing. In humans this includes speech, for which the left temporal lobe in particular seems to be specialized. Wernicke's area, which spans the region between temporal and parietal lobes, plays a key role (with Broca's area, which is in the frontal lobe). The functions of the left temporal lobe extends to comprehension, naming, verbal memory and other language functions. 