Porygon Was Innocent: An epileptic perspective on the infamous Pokémon episode

The mechanics of the human optical system are absolutely wild, and the abstraction many have of "the eye just gathers pixels and sends them to the brain to interpret" is just wrong.

One of the most fascinating things to me about virtual reality was the discovery that we can mitigate VR nausea by giving people temporary "tunnel vision" when they are repositioned in space without their bodies being moved in the real world. For a significant percentage of users, it's the motion in the peripheral vision that leads to the gross dissociative-body nausea, and simply cutting off that stimulus helps significantly. And for other people, it doesn't!

Distill that down further and you get iPhone motion sickness protection, where just having dots overlaid on the phone screen that move based on the accelerometer noticeably help reduce nausea (or at least they sure do in my case).

I've been using an equivalent Android app called KineStop and same thing here, it definitely helps.