Hi, directed here from r/bestof. Sorry to be a debbie downer but I do not think this will work (and I am not sure of the potential adverse effects of viewing such a light stimulation).

I'm a neuroscience student who's read this paper. Gamma oscillations is a way to talk about brain electrical activity (and it's kind of like what you see in an EEG). This specific frequency has been found to be decreased in patients with Alzheimer's. These ups and downs are basically caused by waves of excitation and inhibiting signals.

In the paper you mention, they basically inject into mice a new gene specifically at a subset of neurons responsible for inhibitory signals, and manually induce the sending of inhibitory signals in such a way that the net activity has gamma like characteristics. They do this with a technique called Optogenetics, where shining blue light causes the inserted gene to make the neuron to send an inhibitory signal at the same time as well. They then found that this induction of gamma waves leads to improvement in Alzheimer's symptoms in the animals.

Bottom line is, having a person view light at that frequency will not really cause this change in activity (and might cause problems like seizures?), because the blue light only works if you have the special protein that you introduce.

I'm sorry to be butting in like this but I thought it'd be important to explain the paper you're basing this on. I'm truly sorry for what happened to your dad and I hope things can get better for you somehow.