sentences:  The AON is found behind the olfactory bulb and in front of the piriform cortex (laterally) and olfactory tubercle (medially) in a region often referred to as the olfactory peduncle or retrobulbar area.The peduncle contains the AON as well as two other much smaller regions, the taenia tecta (or dorsal hippocampal rudiment) and the dorsal peduncular cortex.The AON plays a pivotal but relatively poorly understood role in the processing of odor information.