# Limits beyond perception

**URL:** <https://boards.straightdope.com/t/limits-beyond-perception/849032>\
**Category:** In My Humble Opinion\
**Created:** [March 6, 2020, 10:54pm UTC](https://boards.straightdope.com/t/limits-beyond-perception/849032 "2020-03-06T22:54:54Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![eschereal](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/eschereal/32/18939_2.png) [@eschereal](https://boards.straightdope.com/u/eschereal)\
**Post date:** [March 6, 2020, 10:54pm UTC](https://boards.straightdope.com/t/limits-beyond-perception/849032/1 "2020-03-06T22:54:54Z")

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I was hit by a blast of tinnitus that seems like it might have been beyond what I can normally hear (at my age, it drops off around 10Khz), so I suspect the issue is neurological in nature.

Which gets me to wondering. Can your brain produce sensations that are outside the bounds of normal perception, and how would you be able to understand them? What, for instance, would high-frequency ultraviolet light look like, in terms of how you perceive normal light?

Have you had apparent sensory experiences (of any kind) that were outside the bounds of normal and thus clearly generated by your brain, and how were you able to comprehend them?

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**Author:** ![road\_lobo](https://avatars.discourse-cdn.com/v4/letter/r/d78d45/32.png) [@road\_lobo](https://boards.straightdope.com/u/road_lobo)\
**Post date:** [March 7, 2020, 2:13pm UTC](https://boards.straightdope.com/t/limits-beyond-perception/849032/2 "2020-03-07T14:13:07Z")

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The Human Eye Can See in Ultraviolet When the Lens is Removed

> **[The Human Eye Can See in Ultraviolet When the Lens is Removed](https://petapixel.com/2012/04/17/the-human-eye-can-see-in-ultraviolet-when-the-lens-is-removed/)**
>
> You may have heard that digital cameras can be made sensitive to infrared light by removing the IR filter found inside, but did you now that something