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==Structure==
The olfactory peduncle and [[olfactory bulb]] lie in the '''olfactory sulcus'''<ref name="Carpenter">{{cite book |last1=Carpenter |first1=Malcolm B. |title=Core text of neuroanatomy |date=1985 |publisher=Williams & Wilkins |location=Baltimore |isbn=0683014552 |page=29 |edition=3rd}}</ref> a [[sulcus (neuroanatomy)|sulcus]] formed by the [[medial orbital gyrus]] on the inferior surface of each [[frontal lobe]]. The olfactory peduncles lie in the sulci which run closely parallel to the midline. Fibers of the olfactory peduncle appear to end in the antero-lateral part of the [[olfactory tubercle]], the dorsal and external parts of the [[anterior olfactory nucleus]], the frontal and temporal parts of the [[prepyriform area]], the cortico-medial group of [[Amygdala#Structure|amygdala nuclei]] and the [[Stria terminalis#Bed nucleus of the stria terminalis (BNST)|nucleus of the stria terminalis]].<ref>{{Cite journal |last=Allison
The olfactory peduncle divides posteriorly into three main branches: the medial, intermediate and lateral striae. The olfactory peduncle thus terminates in a triangular structure called the [[olfactory trigone]]. Caudal to these elements is the [[anterior perforated substance]], the anterior part of which is marked by the relief of the [[olfactory tubercle]]. Finally, projections from the olfactory peduncle to the anterior olfactory nucleus are sometimes grouped together under the name of '''superior olfactory stria'''.<ref name="GDC"></ref>
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