Friday, August 19, 2011

Smaller Fingers = More Sensitive Finger Tips

Research finds that people with smaller fingers have more sensitive fingertips, probably because of a higher concentration of touch receptors in that area.

100 volunteers' index fingertips were measured. Researchers pressed parallel grooves against the subjects’ fingertips. If they could feel those grooves, then they pressed a narrower set, and so on (kind of like an eye test where you read progressively smaller letters until they’re indistinguishable).

Those with the smallest fingertips felt the narrowest grooves. Scientists think its because of a higher density of receptors - like a larger pixel count that creates a clearer image. Researchers then measured sweat pores density because touch receptor cells cluster around sweat pores. They found that smaller fingers did have a higher concentration of sweat pores.

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