指水生动物体表侧线器的末梢器官。在体表分散存在者称为游离神经丘，其呈孔状者称为孔器，在皮下以一或数条管状而存在者称为管器（canal org-an）
当图象消失了，因为不确定该往哪看，上视丘神经活动会出现起伏现象，引起微眼跳。
When images begin to fade, the uncertainty about where to look increases the fluctuations in superior colliculus activity, triggering a microsaccade.
嗜睡症似乎是由基因遗传导致的，该遗传会是人体无法吸收或产生足够的神经下视丘分泌素。
Narcolepsy is apparently caused by a genetic glitch that prevents the body from either absorbing or producing enough of the neurochemical hypocretin.
饥饿这种感觉虽然很复杂，却也是由视丘下部的神经元所决定的，它将信号传给大脑，告知大脑你是饥饿抑或过撑。
Hunger is a complex sensation, but it is determined in part by neurons located in the hypothalamus, which send signals to the brain telling it that you're either hungry or sated.
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