關於醫學生物方面的文章 英翻中 - 翻譯

※ 引述《oophs (圈圈叉叉)》之銘言：
: 原文：
: The synapses that horizontal cells make with receptors are likewise unusual,
: lacking the electron-microscopic features that would normally tell us which
: way the information is conveyed.
: It is clear that receptors feed information to horizontal cells through
: excitatory synapses because horizontal cells,
: like re-ceptors,are in most cases hyperpolarized, or turned off, by light.
: It is less clear where the horizontal cell sends its output:
: in some species such as turtles we know that they feed information back to
: receptors;in other species they make synapses with the dendrites of bipolar
: cells and doubtless feed into them;in primates we do not have either type of
: information. In summary, horizontal cells get their input from receptors;
: their output is still uncertain, but is either back to receptors, or to
: bipolar cells, or to both.

水平細胞與受器間形成的突觸也同樣不尋常：在電子顯微鏡下，它們缺乏通常可告訴
我們訊息傳遞方向的特徵。受器會透過興奮性突觸將訊息傳送給水平細胞這點是很明
確的，因為水平細胞和受器一樣，在大多情況下會被光線過極化（或關閉）。但水平
細胞在何處傳出資訊就比較不明確了。在一些如烏龜之類的物種上，我們知道水平細
胞會將訊息傳回受器；在其他物種身上，水平細胞則和雙極細胞的樹突形成突觸且無
疑會向其傳遞訊息；至於在靈長類身上，我們還沒看到其中任何一種訊息。總的來說
，水平細胞由受器接受輸入訊息；訊息的輸出方向則還不清楚，但如不是傳回受器，
就是傳給雙極細胞，或者兩者都傳。

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