为了验证这一想法，研究人员又测量了志愿者指尖的汗毛孔密度，因为他们知道触觉受体细胞总是聚集在汗毛孔周围的。

To test the idea, the researchers measured the density of sweat pores. Because they knew that touch receptor cells cluster around sweat pores.

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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.

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