Mammalian neurons have dendritic trees — branched structures with complex geometries — which have mesmerized researchers for over a century. In 1891, Santiago Ram6n y Cajal noticed that whereas sensory neurons point their dendrites towards the periphery, they always send their axons towards the brain. He suggested that a neuron receives information through its dendrites, and that it transmits this information through its axon. But exactly how the dendrites receive and integrate sensory inputs, andtransfer them to the axon, is still a mystery.
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机译：哺乳动物的神经元具有树突状树-具有复杂几何形状的分支结构-使研究人员着迷了一个多世纪。 1891年，圣地亚哥·拉姆（Santiago Ram6n y Cajal）注意到，虽然感觉神经元将树突指向周围，但它们始终将轴突发送到大脑。他建议神经元通过树突接收信息，并通过轴突传递信息。但是，树突究竟如何接收和整合感觉输入并将其传递到轴突上，仍然是一个谜。
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