this post was submitted on 03 Dec 2025
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I can tell where a laser is pointed on me without looking. Like if you blindfold me and got a laser pen and shined it on my arm, I can point to where it feels like it is with pretty good accuracy. It’s easier to detect motion than precise placement, and sensation wise it’s not touch or heat like you’d expect it’s more like raw proprioception.
Also it felt the same regardless of the color of laser we used which seems odd since you’d think higher frequency light would be easier to detect.
Tbf I haven’t done the experiment since I did it with my siblings when I was pretty young. Not sure if I can still do it, but my siblings and cousins couldn’t do it even back then.
Human skin contains photoreceptors, so this makes perfect sense.
You're saying I can learn to see with my buttocks if one puts the right kind of lens in front of it and the light is sufficiently intense?