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下丘
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'''下丘'''(Inferior colliculus,来源于拉丁语,字面意思为“下方的小山”)是[[中脑顶盖]]部的[[神经核]]团,左右各一,关于中线对称。下丘与[[上丘]]一起组成所谓的“[[四叠体]]”,是[[中脑]]背侧[[顶盖]]部一个显著的[[解剖]]结构。下丘是[[听觉通路]]的一个重要组成部分。它接受所有位于[[脑干]]的下级[[听觉]]核团的输入,并向上投射到[[丘脑]]的[[内侧膝状体]](Medial geniculate nucleus,MGN)。 == 与听觉通路其它部分的关系 == 在中脑,下丘的位置在上丘这一关键性[[视觉]]核团的下方。下丘是来自背侧[[耳蜗]]核(DCN)的纵向[[听觉定位]]信息与来自[[上橄榄核]]的横向听觉定位信息最先整合的部位,从而下丘在声音的[[空间定位]]功能中扮演重要角色。 下丘大致可以三个子部,包括,'''[[中央核]]'''(Central nucleus,简称'''CNIC'''),'''中央旁核'''(Pericentral nucleus),和'''外核'''(External nucleus)。 <table class=MsoTableGrid border=1 cellspacing=0 cellpadding=0 style='border-collapse:collapse;border:none;mso-border-alt:solid windowtext .5pt; mso-yfti-tbllook:480;mso-padding-alt:0cm 5.4pt 0cm 5.4pt;mso-border-insideh: .5pt solid windowtext;mso-border-insidev:.5pt solid windowtext'> <tr style='mso-yfti-irow:0;mso-yfti-firstrow:yes'> <td width=189 colspan=2 style='width:142.0pt;border:solid windowtext 1.0pt; mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='mso-ansi-language:EN-US'>核团</p> </td> <td width=189 colspan=2 style='width:142.05pt;border:solid windowtext 1.0pt; border-left:none;mso-border-left-alt:solid windowtext .5pt;mso-border-alt: solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt'> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='mso-ansi-language:EN-US'>输入源头</span></p> </td> <td width=189 style='width:142.05pt;border:solid windowtext 1.0pt;border-left: none;mso-border-left-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt; padding:0cm 5.4pt 0cm 5.4pt'> <p class=MsoNormal align=center style='text-align:center;tab-stops:center 65.05pt'><span lang=EN-US style='mso-ansi-language:EN-US'>输出目标</span></p> </td> </tr> <tr style='mso-yfti-irow:1;height:31.5pt'> <td width=95 rowspan=3 style='width:71.0pt;border:solid windowtext 1.0pt; border-top:none;mso-border-top-alt:solid windowtext .5pt;mso-border-alt:solid windowtext .5pt; padding:0cm 5.4pt 0cm 5.4pt;height:31.5pt'> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='mso-ansi-language:EN-US'>下丘</span></p> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='mso-ansi-language:EN-US'></span></p> </td> <td width=95 style='width:71.0pt;border-top:none;border-left:none;border-bottom: solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;mso-border-top-alt: solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;mso-border-alt: solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:31.5pt'> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='mso-ansi-language:EN-US'>中央核</span></p> </td> <td width=95 rowspan=3 valign=top style='width:71.0pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:31.5pt'> <p class=MsoNormal><span class=SpellE><span lang=EN-US style='mso-ansi-language: EN-US'>对侧</span></span><span lang=EN-US style='mso-ansi-language: EN-US'></span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'></span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-前侧耳蜗核(AVCN)</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-后侧耳蜗核(PVCN)</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-背侧耳蜗核(DCN)</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-上丘(SCN)</span></p> </td> <td width=95 rowspan=3 valign=top style='width:71.05pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:31.5pt'> <p class=MsoNormal><span class=SpellE><span lang=EN-US style='mso-ansi-language: EN-US'>同侧</span></span><span lang=EN-US style='mso-ansi-language: EN-US'></span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'></span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-外侧上[[橄榄体]](LSO)</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-内侧上橄榄体(MSO)</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-[[外侧丘系]]背侧核(DNLL)</span></p> </td> <td width=189 rowspan=3 valign=top style='width:142.05pt;border-top:none; border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt; mso-border-top-alt:solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt; mso-border-alt:solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:31.5pt'> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-内侧膝状体</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-听觉[[皮层]]</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-上丘的深层</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-<span class=SpellE>Contralateral</span> and other nuclei in the <span class=SpellE>ipsilateral</span> IC</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-网状结构</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-<span class=SpellE>[[中脑导水管周围灰质]]</span></p> <p class=MsoNormal><span lang=EN-US style='mso-ansi-language:EN-US'>-[[斜方体]](TB)</span></p> </td> </tr> <tr style='mso-yfti-irow:2;height:35.3pt'> <td width=95 style='width:71.0pt;border-top:none;border-left:none;border-bottom: solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;mso-border-top-alt: solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;mso-border-alt: solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:35.3pt'> <p class=MsoNormal align=center style='text-align:center'><span class=SpellE><span lang=EN-US style='mso-ansi-language:EN-US'>中央旁</span></span><span lang=EN-US style='mso-ansi-language:EN-US'>核</span></p> </td> </tr> <tr style='mso-yfti-irow:3;mso-yfti-lastrow:yes;height:27.5pt'> <td width=95 style='width:71.0pt;border-top:none;border-left:none;border-bottom: solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;mso-border-top-alt: solid windowtext .5pt;mso-border-left-alt:solid windowtext .5pt;mso-border-alt: solid windowtext .5pt;padding:0cm 5.4pt 0cm 5.4pt;height:27.5pt'> <p class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='mso-ansi-language:EN-US'>外核</span></p> </td> </tr> </table> {{中脑}} [[Category:听觉系统]] [[Category:脑干]] [[Category:神经解剖学]] ==参考来源== *[http://zh.wikipedia.org/wiki/%E4%B8%8B%E4%B8%98 维基百科-下丘]
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