I made an UnrealEngine powered VR app this weekend to see if the Ganzfeld and Phosphene effects could be reproduced in a VR headset.
!!! WARNING !!!
Do NOT use this app if you have epilepsy, are prone to seizures, or sensitive to light/visual stimulus. Scientists warns against doing this for longer than 30 minutes.
!!! WARNING !!!
-= How to Use =-
1. Run GanzfeldVR.exe
2. Put your VR headset on
3. Close your eyes
4. Use the keyboard to adjust the frequency and colors
5. Sit back, relax, and notice that your brain fills in colors
and makes patterns that are not there
You can keep your eyes open, but it can be... uncomfortable. You
might be able to induce the effect without VR by maximizing the
app on your screen and sitting fairly close to it. Chances are your
monitor refresh is only 60 Hz so that would be the maximum
frequency in that case. I see the greatest effect in the 15-30 Hz
range. You can also try firing up some [binaural beats](https://mynoise.net/NoiseMachines/binauralBrainwaveGenerator.php) and matching
the frequencies. YMMV.
-= Keys =-
Esc --> exit the app
H --> toggle the text on/off
N --> toggle white noise on/off
Numpad +/- --> increment/decrement the frequency by 0.1
+/- --> increment/decrement the frequency by 1
Page Up/Down --> increment/decrement the frequency by 10
R --> toggle red on/off
O --> toggle orange on/off
Y --> toggle yellow on/off
G --> toggle green on/off
B --> toggle blue on/off
C --> toggle cyan on/off
M --> toggle magenta on/off
W --> toggle white on/off
A --> toggle gray on/off
L --> toggle black on/off
-= Defaults =-
Frequency: 1 Hz
Colors: Black, White
Noise: On
-= Things to try =-
Frequency: ~13 Hz
Colors: Black, White
Noise: On
Frequency: ~17 Hz
Colors: Black, White
Noise: On
Frequency: n/a
Colors: Red (eyes open) OR White (eyes closed)
Noise: On