这种微小的刚毛遍布蜘蛛的身体表面，实际上是敏感的触觉感受器。
The tiny bristles distributed all over a spider's body surface, are actually sensitive tactile receptors.
果不其然，那些手指较小或指尖较为敏感的志愿者手指上确实生有更大密度的汗毛孔，也就意味着他们拥有更大密度的触觉感受器。
And people with smaller and more sensitive fingers did have a higher concentration of sweat pores. Which means more receptors.
《神经科学》杂志上的一项研究发现，那些手指较小的人们拥有更敏感的指尖，大概是因为在他们指尖集中的触觉感受器要多于常人。
A study in the Journal of Neuroscience finds that people with smaller fingers have more sensitive fingertips, probably due to a higher concentration of touch receptors in a given area.
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