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using an IR sensor for eye movement during sleep? What kind of sensor or emiiter/detector could i find that would achieve close range, high sensitivity, movement of an eye?

Nemesis25 Level 3

Part of a lucid dreaming mask i've been thinking of making. I want to use a sensor of some sort to detect REM sleep and then once in a lucid dreaming state I'd like to have a feedback system that looks for a set pattern of movements, so i can tell the device to stop emiting lights when I am in a lucid dreaming state.

 

My other option is to use an accelerometer to detect rem sleep in patterns fo movements every 90 minutes but thats seems erratic and prone to problems

 

any ideas or advice would be much appriciated!

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