This paper found that a circular checkboard pattern flickered and held for 16 seconds and then turned off for 16 seconds resulted in cerebrospinal fluid flow and could aid clearing the brain in an awake state much like we do when asleep.

I have produced similar images as used in the experiment. I have used 16 seconds on and off and the checkerboard flickering.

Changelog

V0.3

• Web Powell recreated the image from scratch with vector designing tools and its now as clear as its meant to be.

V0.2

• Cleaned up the image a little
• Changed the flicker to use an opposite phase image, which is more comfortable and I beleive closer to what the paper describes.
• Reduce to 4hz since the impact of 8hz in the paper wasn’t much and its a lot more comfortable this way.

V0.1

• Based on 8hz flicker to grey image

Usage

• In the experiment they were shown this for 256 seconds, which is 8 cycles.
• You should focus on the red dot in the middle.
• Click the Prototype link below to get started.

WARNING This link leads to a page containing a flashing image. Even if these don’t cause seizures in my experience this feels weird and is cognitively exerting.

»Latest Prototype V0.3«

»V0.2«

»V0.1«