• 作者： 吳慶明; 沈清良
• 作者服務機構： 國立成功大學醫學院解剖科
• 中文摘要： 本實驗是以標示的胺基酸當作追?物質，來探討赤腹松鼠的視神經傳導路徑。首先將上述兩種標示的胺基酸混合後
  注入赤腹松鼠的右眼中，經一星期後，犧牲取腦並以標準的自動放射顯影法處理，最後在暗視野的顯微鏡下觀察這些切
  片。結果發現在中樞神經系統中有部分的神經核，被標示上了放射性物質。這些神經核是視神經交叉核、外側膝狀核、
  上丘前頂蓋區神經核及輔助視神經核。另外丘腦枕核，parabigeminal核和背外側橋腦灰質，也接受視神經的投射。
  上述的神經核中，有的是接受兩側的視神經投射，有的?只接受對側的視神經投射，再者在外側膝狀體及上丘都有
  明顯的分層現象。在此我們也將赤腹松鼠的視神經傳導路徑與牠的近親－美洲灰松鼠及其它的哺乳動物作比較。d
• 英文摘要： Tritiated labeled materials, [3H] proline and [3H] fucose, were used as tracers of the visual pathwayby injection into the right eve of the red belly squirrel, After a designated survival period, the animals weresacrificed, and the brains were removed and processed using standard autoradiographic procedures. Sectionswere then examined under a microscope and some subcortical nuclei including the suprachiasmatic nucleus(SCN), dorsal and ventral lateral geniculate nuclei(dLGN and vLGN), three optic accessory nuclei (i.e., themedial, lateral and dorsal terminal nuclei-MTN, LTN and DTN), the nuclei of the pretectal area(PTN) andthe superior colliculus(SC) in the subcortical regions were marked by labeled isotopes. Radioactive materialswere found in the pulvinar nucleus(Pul), parabigeminal nucleus(PB) and dorsal lateral pontine gray(DLP).Some nuclei among the targets of retinal projection in the red belly squirrel received their projectionbilaterally while others only did contralaterally. In addition, layered structures of the SC and LGN wereclearly demonstrated in the brain of the red belly squirrel. Some differences in the optic system betweenthe red belly squirrel and its near relative, the grey squirrel of North American, and other mammals arediscussed.
• 中文關鍵字： red belly squirrel; autoradiography; retinal projections
• 英文關鍵字： --