# How/why do binaural beats work? **URL:** \ **Category:** Factual Questions\ **Created:** [September 23, 2014, 4:17am UTC](https://boards.straightdope.com/t/how-why-do-binaural-beats-work/699307 "2014-09-23T04:17:20Z")\ **Posts on this page:** 2\ **Page:** 2
**Author:** ![Mangetout](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/mangetout/32/19_2.png) [@Mangetout](https://boards.straightdope.com/u/Mangetout)\ **Post date:** [September 25, 2014, 8:21pm UTC](https://boards.straightdope.com/t/how-why-do-binaural-beats-work/699307/21 "2014-09-25T20:21:09Z")
> [@cmyk](#): > > Makes me wonder if such a thing is possible with the eyes/visual cortex. I’m thinking something along the lines of the double slit experiment, but not quite sure how you’d set that up. Damn, that would be good fun, although [moire patterns](http://en.wikipedia.org/wiki/Moir%C3%A9_pattern) might be easier. ---
**Author:** ![cmyk](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cmyk/32/3353_2.png) [@cmyk](https://boards.straightdope.com/u/cmyk)\ **Post date:** [September 26, 2014, 1:11am UTC](https://boards.straightdope.com/t/how-why-do-binaural-beats-work/699307/22 "2014-09-26T01:11:30Z")
> [@Mangetout](#): > > Damn, that would be good fun, although [moire patterns](http://en.wikipedia.org/wiki/Moir%C3%A9_pattern) might be easier. Coming from the graphics industry, I’m very familiar with moire patterns. I’m wondering if there might be a way to reproduce the phenomenon within the eye/brain system, rather than outside it. Back to the double slit experiment, if each pupil acted as a “slit”, what wavelength and distance might a light source need to be to try and replicate the interference patter _within the brain?_ Assuming this hasn’t already been attempted before, of course. [Previous page](https://boards.straightdope.com/t/how-why-do-binaural-beats-work/699307.md?page=1)