The display looks a lot like at least one, possibly two kinds of electrical artifact (AC interference plus some kind of 0.4 Hz event that might be real or artifact). I would filter it to just keep the 2 Hz to 16 Hz parts of the signal and see it you actually have data under all of that.
Your finger has a pulse, so you are measuring your pulse, plus AC static, most likely. The 0.4 Hz blip could be a faint ECG signal (1/2 pulse rate). Maybe ECG, at least: it could be some other signal artifact, and note such equipment is not designed to tell such things well without the electrodes.
I am not seeing an interruption, just a intermittent peak. You would be able to tell better with electrodes on the body I think
@Cloud, please follow the suggested steps in the Cyton tutorial for measuring sample EEG, ECG, EMG. Electrodes MUST be connected to body, otherwise you just get noise.
Comments
The display looks a lot like at least one, possibly two kinds of electrical artifact (AC interference plus some kind of 0.4 Hz event that might be real or artifact). I would filter it to just keep the 2 Hz to 16 Hz parts of the signal and see it you actually have data under all of that.
without electrode and any connection it shows it
without electrodes you are using it like a detuned radio and are listening to the static
Just i put my finger on them but still this interruption remain, i worry that it relate ti hardware.
Your finger has a pulse, so you are measuring your pulse, plus AC static, most likely. The 0.4 Hz blip could be a faint ECG signal (1/2 pulse rate). Maybe ECG, at least: it could be some other signal artifact, and note such equipment is not designed to tell such things well without the electrodes.
I am not seeing an interruption, just a intermittent peak. You would be able to tell better with electrodes on the body I think
@Cloud, please follow the suggested steps in the Cyton tutorial for measuring sample EEG, ECG, EMG. Electrodes MUST be connected to body, otherwise you just get noise.
https://docs.openbci.com/docs/01GettingStarted/01-Boards/CytonGS
https://docs.openbci.com/docs/01GettingStarted/02-Biosensing-Setups/EEGSetup
Regards, William