<Tr> <Th> FMA </Th> <Td> 61961 62053, 61961 </Td> </Tr> <Tr> <Td_colspan="2"> Anatomical terms of neuroanatomy (edit on Wikidata) </Td> </Tr> <P> The anterior commissure (also known as the precommissure) is a white matter tract (a bundle of axons) connecting the two temporal lobes of the cerebral hemispheres across the midline, and placed in front of the columns of the fornix . The great majority of fibers connecting the two hemispheres travel through the corpus callosum, which is over 10 times larger than the anterior commissure, and other routes of communication pass through the hippocampal commissure or, indirectly, via subcortical connections . Nevertheless, the anterior commissure is a significant pathway that can be clearly distinguished in the brains of all mammals . </P> <P> The anterior commissure plays a key role in pain sensation, more specifically sharp, acute pain . It also contains decussating fibers from the olfactory tracts, vital for the sense of smell and chemoreception . The anterior commissure works with the posterior commissure to link the two cerebral hemispheres of the brain and also interconnects the amygdalae and temporal lobes, contributing to the role of memory, emotion, speech and hearing . It also is involved in olfaction, instinct, and sexual behavior . </P>

Where is the anterior commissure located in the brain
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