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by jaipraveen
30 Sep 2017 08:14
Forum: Lucid Dreaming Techniques
Topic: Any device to track brainwave frequency?
Replies: 1
Views: 675

Any device to track brainwave frequency?

Is there any device in market today to track brainwave frequency during meditation and sleep?

I know there are sleep masks paralleling this function, any users of it .. please share your experiences and feedback.

Thank you.

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