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style="background-color:lemonchiffon">Interpeduncular fossa</th></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Gray724.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Gray724.png/250px-Gray724.png" decoding="async" width="250" height="245" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Gray724.png/375px-Gray724.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d7/Gray724.png/500px-Gray724.png 2x" data-file-width="600" data-file-height="588" /></a></span><div class="infobox-caption">Base of <a href="/wiki/Brain" title="Brain">brain</a></div></td></tr><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:Cn3nucleus-en.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Cn3nucleus-en.svg/250px-Cn3nucleus-en.svg.png" decoding="async" width="250" height="153" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Cn3nucleus-en.svg/375px-Cn3nucleus-en.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Cn3nucleus-en.svg/500px-Cn3nucleus-en.svg.png 2x" data-file-width="770" data-file-height="470" /></a></span><div class="infobox-caption">Section through superior colliculus showing path of oculomotor nerve (interpeduncular fossa not labeled, but visible at bottom center)</div></td></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Details</th></tr><tr><th colspan="2" class="infobox-header" style="background-color: #efefef">Identifiers</th></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/Latin" title="Latin">Latin</a></th><td class="infobox-data"><i>fossa interpeduncularis</i></td></tr><tr><th scope="row" class="infobox-label" style="padding-right:0.25em"><a href="/wiki/NeuroNames" title="NeuroNames">NeuroNames</a></th><td class="infobox-data"><a rel="nofollow" class="external text" href="http://braininfo.rprc.washington.edu/centraldirectory.aspx?ID=489">489</a></td></tr><tr><td colspan="2" class="infobox-below"><a href="/wiki/Anatomical_terms_of_neuroanatomy" title="Anatomical terms of neuroanatomy">Anatomical terms of neuroanatomy</a><div style="text-align: right;"><small class="noprint">[<a href="https://www.wikidata.org/wiki/Q3748994" class="extiw" title="d:Q3748994">edit on Wikidata</a>]</small></div></td></tr></tbody></table> <p>The <b>interpeduncular fossa</b> is a deep depression of the ventral surface of the <a href="/wiki/Midbrain" title="Midbrain">midbrain</a> between the two <a href="/wiki/Cerebral_crus" title="Cerebral crus">cerebal crura</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-TheFreeDictionary.com_2-0" class="reference"><a href="#cite_note-TheFreeDictionary.com-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Gray-2021_3-0" class="reference"><a href="#cite_note-Gray-2021-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> It has been found in humans and macaques, but not in rats or mice, showing that this is a relatively new evolutionary region.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Structure">Structure</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=1" title="Edit section: Structure"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The interpeduncular fossa is a somewhat rhomboid-shaped area of the base of the brain.<sup id="cite_ref-IMAIOS_5-0" class="reference"><a href="#cite_note-IMAIOS-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Features">Features</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=2" title="Edit section: Features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The lateral wall of the interpeduncular fossa bears a groove - the oculomotor sulcus - from which<sup id="cite_ref-TheFreeDictionary.com-2_6-0" class="reference"><a href="#cite_note-TheFreeDictionary.com-2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> rootlets of the <a href="/wiki/Oculomotor_nerve" title="Oculomotor nerve">oculomotor nerve</a> emerge from the substance of the brainstem and aggregate into a single fascicle.<sup id="cite_ref-Gray-2021_3-1" class="reference"><a href="#cite_note-Gray-2021-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-TheFreeDictionary.com-2_6-1" class="reference"><a href="#cite_note-TheFreeDictionary.com-2-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Anatomical_relations">Anatomical relations</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=3" title="Edit section: Anatomical relations"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Ventral_tegmental_area" title="Ventral tegmental area">ventral tegmental area</a> lies at the depth of the interpeduncular fossa.<sup id="cite_ref-Gray-2021_3-2" class="reference"><a href="#cite_note-Gray-2021-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading4"><h4 id="Boundaries">Boundaries</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=4" title="Edit section: Boundaries"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The interpeduncular fossa is in front by the <a href="/wiki/Optic_chiasma" class="mw-redirect" title="Optic chiasma">optic chiasma</a>, behind by the antero-superior surface of the <a href="/wiki/Pons" title="Pons">pons</a>, antero-laterally by the converging optic tracts, and postero-laterally by the diverging cerebral peduncles.<sup id="cite_ref-IMAIOS_5-1" class="reference"><a href="#cite_note-IMAIOS-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p><p>The floor of interpeduncular fossa, from behind forward,<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2022)">citation needed</span></a></i>]</sup> are the <a href="/wiki/Posterior_perforated_substance" title="Posterior perforated substance">posterior perforated substance</a>,<sup id="cite_ref-TheFreeDictionary.com_2-1" class="reference"><a href="#cite_note-TheFreeDictionary.com-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Corpora_mamillaria" class="mw-redirect" title="Corpora mamillaria">corpora mamillaria</a>, <a href="/wiki/Tuber_cinereum" title="Tuber cinereum">tuber cinereum</a>, <a href="/wiki/Pituitary_stalk" title="Pituitary stalk">infundibulum</a>, and <a href="/wiki/Pituitary_gland" title="Pituitary gland">pituitary gland</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2022)">citation needed</span></a></i>]</sup> </p> <div class="mw-heading mw-heading4"><h4 id="Contents">Contents</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=5" title="Edit section: Contents"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Contents of interpeduncular fossa include <a href="/wiki/Oculomotor_nerve" title="Oculomotor nerve">oculomotor nerve</a>, and <a href="/wiki/Circle_of_Willis" title="Circle of Willis">circle of Willis</a>.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2022)">citation needed</span></a></i>]</sup> </p><p>The <a href="/wiki/Basal_vein" title="Basal vein">basal veins</a> pass alongside the interpeduncular fossa before joining the <a href="/wiki/Great_cerebral_vein" title="Great cerebral vein">great cerebral vein</a>.<sup id="cite_ref-Gray-2021A_7-0" class="reference"><a href="#cite_note-Gray-2021A-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Clinical_significance">Clinical significance</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=6" title="Edit section: Clinical significance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The most common locations for <a href="/wiki/Neurocutaneous_melanosis" title="Neurocutaneous melanosis">neurocutaneous melanosis</a> have occurred along the interpeduncular fossa, ventral brainstem, upper cervical cord, and ventral lumbosacral cord.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=7" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Interpeduncular_cistern" title="Interpeduncular cistern">Interpeduncular cistern</a></li> <li><a href="/wiki/Cerebral_peduncles" class="mw-redirect" title="Cerebral peduncles">Cerebral peduncles</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Additional_images">Additional images</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=8" title="Edit section: Additional images"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul class="gallery mw-gallery-traditional"> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Human_brainstem_anterior_view_2_description.JPG" class="mw-file-description" title="Human brainstem anterior view"><img alt="Human brainstem anterior view" src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Human_brainstem_anterior_view_2_description.JPG/85px-Human_brainstem_anterior_view_2_description.JPG" decoding="async" width="85" height="120" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Human_brainstem_anterior_view_2_description.JPG/128px-Human_brainstem_anterior_view_2_description.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b1/Human_brainstem_anterior_view_2_description.JPG/170px-Human_brainstem_anterior_view_2_description.JPG 2x" data-file-width="346" data-file-height="487" /></a></span></div> <div class="gallerytext">Human brainstem anterior view</div> </li> <li class="gallerybox" style="width: 155px"> <div class="thumb" style="width: 150px; height: 150px;"><span typeof="mw:File"><a href="/wiki/File:Slide7dd.JPG" class="mw-file-description" title="Interpeduncular fossa. Cerebrum. Deep dissection. Inferior dissection."><img alt="Interpeduncular fossa. Cerebrum. Deep dissection. Inferior dissection." src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Slide7dd.JPG/120px-Slide7dd.JPG" decoding="async" width="120" height="90" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Slide7dd.JPG/180px-Slide7dd.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c1/Slide7dd.JPG/240px-Slide7dd.JPG 2x" data-file-width="960" data-file-height="720" /></a></span></div> <div class="gallerytext">Interpeduncular fossa. Cerebrum. Deep dissection. Inferior dissection.</div> </li> </ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><span class="noviewer" typeof="mw:File"><span><img alt="Public domain" src="//upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/12px-PD-icon.svg.png" decoding="async" width="12" height="12" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/18px-PD-icon.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/6/62/PD-icon.svg/24px-PD-icon.svg.png 2x" data-file-width="196" data-file-height="196" /></span></span> <i>This article incorporates text in the <a href="/wiki/Public_domain" title="Public domain">public domain</a> from <a rel="nofollow" class="external text" href="https://archive.org/stream/anatomyofhumanbo1918gray#page/816/mode/2up">page 816</a> of the 20th edition of</i> <a href="/wiki/Gray%27s_Anatomy" title="Gray's Anatomy">Gray's Anatomy</a> <i>(1918)</i></p><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFBasingerHogg2022" class="citation cs2">Basinger, Hayden; Hogg, Jeffery P. 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(2015). "Neurocutaneous melanosis". <i>Neurocutaneous Syndromes</i>. Handbook of Clinical Neurology. Vol. 132. pp. 111–7. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1016%2FB978-0-444-62702-5.00007-X">10.1016/B978-0-444-62702-5.00007-X</a>. <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-444-62702-5" title="Special:BookSources/978-0-444-62702-5"><bdi>978-0-444-62702-5</bdi></a>. <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/26564074">26564074</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Neurocutaneous+melanosis&rft.btitle=Neurocutaneous+Syndromes&rft.series=Handbook+of+Clinical+Neurology&rft.pages=111-7&rft.date=2015&rft_id=info%3Apmid%2F26564074&rft_id=info%3Adoi%2F10.1016%2FB978-0-444-62702-5.00007-X&rft.isbn=978-0-444-62702-5&rft.aulast=Islam&rft.aufirst=Monica+P.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AInterpeduncular+fossa" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Interpeduncular_fossa&action=edit&section=10" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" 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style="font-size:114%;margin:0 4em">Anatomy of the <a href="/wiki/Midbrain" title="Midbrain">midbrain</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Midbrain_tectum" class="mw-redirect" title="Midbrain tectum">Tectum</a><br />(Dorsal)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Corpora_quadrigemina" title="Corpora quadrigemina">Corpora quadrigemina</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Inferior_colliculus" title="Inferior colliculus">Inferior colliculus</a> <ul><li><a href="/wiki/Inferior_colliculus#Input_and_output_connections_of_IC" title="Inferior colliculus">Inferior brachium</a></li></ul></li> <li><a href="/wiki/Superior_colliculus" title="Superior colliculus">Superior colliculus</a> <ul><li><a href="/wiki/Superior_colliculus#Structure" title="Superior colliculus">Superior brachium</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Grey_matter" title="Grey matter">Grey matter</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pretectal_area" title="Pretectal area">Pretectal area</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/White_matter" title="White matter">White matter</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Sensory / ascending</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Spinotectal_tract" class="mw-redirect" title="Spinotectal tract">Spinotectal tract</a></li> <li><a href="/wiki/Central_tegmental_tract" title="Central tegmental tract">Central tegmental tract</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Motor / descending</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Tectospinal_tract" title="Tectospinal tract">Tectospinal tract</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ventricular_system" title="Ventricular system">CSF</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cerebral_aqueduct" title="Cerebral aqueduct">Cerebral aqueduct</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cerebral_peduncle" title="Cerebral peduncle">Peduncle</a><br />(Ventral)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Midbrain_tegmentum" title="Midbrain tegmentum">Tegmentum</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/White_matter" title="White matter">White matter</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%">Sensory / ascending</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li>Lemnisci <ul><li><a href="/wiki/Medial_lemniscus" title="Medial lemniscus">Medial</a></li> <li><a href="/wiki/Lateral_lemniscus" title="Lateral lemniscus">Lateral</a></li></ul></li> <li><a href="/wiki/Medial_longitudinal_fasciculus" title="Medial longitudinal fasciculus">Ascending MLF</a> <ul><li><a href="/wiki/Vestibulo-oculomotor_fibers" title="Vestibulo-oculomotor fibers">Vestibulo-oculomotor fibers</a></li></ul></li> <li><a href="/wiki/Spinothalamic_tract" title="Spinothalamic tract">Spinothalamic tract</a></li> <li><a href="/wiki/Ventral_trigeminal_tract" title="Ventral trigeminal tract">Ventral trigeminal tract</a></li> <li><a href="/wiki/Dentatothalamic_tract" title="Dentatothalamic tract">Dentatothalamic tract</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Motor / descending</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Rubrospinal_tract" title="Rubrospinal tract">Rubrospinal tract</a></li> <li><a href="/wiki/Rubro-olivary_tract" title="Rubro-olivary tract">Rubro-olivary tract</a></li> <li><a href="/wiki/Medial_longitudinal_fasciculus" title="Medial longitudinal fasciculus">Descending MLF</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Grey_matter" title="Grey matter">Grey matter</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cranial_nerve_nucleus" title="Cranial nerve nucleus">cranial nuclei</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/General_somatic_afferent_fibers" class="mw-redirect" title="General somatic afferent fibers">GSA</a> <ul><li><a href="/wiki/Mesencephalic_nucleus_of_trigeminal_nerve" title="Mesencephalic nucleus of trigeminal nerve">Mesencephalic</a></li></ul></li> <li><a href="/wiki/General_somatic_efferent_fibers" class="mw-redirect" title="General somatic efferent fibers">GSE</a> <ul><li><a href="/wiki/Oculomotor_nucleus" title="Oculomotor nucleus">Oculomotor nucleus</a></li> <li><a href="/wiki/Trochlear_nucleus" title="Trochlear nucleus">Trochlear nucleus</a></li></ul></li> <li><a href="/wiki/General_visceral_efferent_fibers" class="mw-redirect" title="General visceral efferent fibers">GVE</a> <ul><li><a href="/wiki/Edinger%E2%80%93Westphal_nucleus" title="Edinger–Westphal nucleus">Edinger–Westphal nucleus</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ventral_tegmental_area" title="Ventral tegmental area">Ventral tegmental area</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Rostromedial_tegmental_nucleus" title="Rostromedial tegmental nucleus">Rostromedial tegmental nucleus</a></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Periaqueductal_gray" title="Periaqueductal gray">Periaqueductal gray</a></li> <li><a href="/wiki/Red_nucleus" title="Red nucleus">Red nucleus</a></li> <li><a href="/wiki/Rostral_interstitial_nucleus_of_medial_longitudinal_fasciculus" title="Rostral interstitial nucleus of medial longitudinal fasciculus">Rostral interstitial nucleus of medial longitudinal fasciculus</a></li> <li><a href="/wiki/Parabrachial_area" class="mw-redirect" title="Parabrachial area">Parabrachial area</a></li> <li><a href="/wiki/Interpeduncular_nucleus" title="Interpeduncular nucleus">Interpeduncular nucleus</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Midbrain_reticular_formation" title="Midbrain reticular formation">Midbrain reticular formation</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Dorsal_tegmental_nucleus" title="Dorsal tegmental nucleus">Dorsal tegmental nucleus</a></li> <li><a href="/wiki/Raphe_nuclei" title="Raphe nuclei">Raphe nuclei</a> <ul><li><a href="/wiki/Dorsal_raphe_nucleus" title="Dorsal raphe nucleus">dorsal</a></li></ul></li> <li><a href="/wiki/Reticulotegmental_nucleus" title="Reticulotegmental nucleus">Reticulotegmental nucleus</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Base</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/White_matter" title="White matter">White</a> / <a href="/wiki/Cerebral_crus" title="Cerebral crus">Cerebral crus</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pyramidal_tracts" title="Pyramidal tracts">Pyramidal tracts</a> <ul><li><a href="/wiki/Corticospinal_tract" title="Corticospinal tract">Corticospinal tract</a></li> <li><a href="/wiki/Corticobulbar_tract" title="Corticobulbar tract">Corticobulbar tract</a></li></ul></li> <li><a href="/wiki/Corticopontine_fibers" title="Corticopontine fibers">Corticopontine tract</a> <ul><li><a href="/wiki/Frontopontine_fibers" title="Frontopontine fibers">Frontopontine fibers</a></li> <li><a href="/wiki/Temporopontine_fibers" title="Temporopontine fibers">Temporopontine fibers</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Grey_matter" title="Grey matter">Grey</a> / <a href="/wiki/Substantia_nigra" title="Substantia nigra">Substantia nigra</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Pars_compacta" title="Pars compacta">Pars compacta</a></li> <li><a href="/wiki/Pars_reticulata" title="Pars reticulata">Pars reticulata</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Surface</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Superior_cerebellar_peduncle" title="Superior cerebellar peduncle">Superior cerebellar peduncle</a> <ul><li><a href="/wiki/Decussation_of_superior_cerebellar_peduncles" class="mw-redirect" title="Decussation of superior cerebellar peduncles">Decussation</a></li></ul></li> <li><a class="mw-selflink selflink">Interpeduncular fossa</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr></tbody></table><div></div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output 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