Horse shoe is blank

[shaulmu]

Hi
I am using Sony Xperia xz.on the muse app there is no problem at all.but on mind monitor although the blootooth connection is established without any problem the horse shoe icon is blank.
Thank you

[James]

Scrub the center three electrodes with rubbing alcohol to clean them, then try again. Without the center grounding connection, brainwaves will not be calculated.

[shaulmu]

Does not help.i rubbed it with alcohol it doesn't seem to help.
Thanks

[James]

The Interaxon Calm app will pretty much never tell you you have a bad signal. The app is designed for meditation and if it bleeped and warned you every time there was a signal drop, it would totally spoil the relaxation experience! You can test this by slipping a bit of paper in-between one sensor during a session and nothing will happen. I'm guessing that when they loose data on one sensor they just go with whatever data they have from the others. Mind Monitor on the other hand is all about the data! So the second your connection is sub-optimal, it'll tell you

Switch over to the RAW EEG view; This one - https://mind-monitor.com/img/mm-screen-3.jpg

What you want to get here are thin crisp lines, with large spikes when you blink or move your eyes quickly.

In the example picture here you can see how TP9 is more "fuzzy" than the rest, this means the connection is not so good. It's ok, but it could be better!

Tighten the band and sit still until the lines stop jumping over the place and you should get a good signal.

If the top center HSI indicator doesn't fill in, then the center three grounding elecctrodes are not connected.