Connecting but no signal

[Thiagarajan Tara]

We have 2 Emotiv EPOC+ devices and are having trouble in getting them to work and record EEG signals. We are using the devices in the U. Khartoum, Sudan. Due to political turmoil in the country, we could not use the devices for over a year. On resumption, we were unable to get the devices to work. We would really appreciate it, if you could suggest any workaround and get the recordings going.

 

Here are the guidelines we followed

1. Ensure battery is fully charged
2. Add sufficient amount of saline (0.9% saline) that electrodes feel wet
3. Ensure the ground electrodes touch the mastoid
4. License are active
5. Uninstalled and reinstalled the apps.

The screens on EPOC+ look as shown below. The device seems to be connected, however we are not able to sustain a connection to the electrodes. Our licenses are active. The hardware itself is well maintained with minimal wear and tear.

• This topic was modified 2 years, 10 months ago by Thiagarajan Tara.

[Thiagarajan Tara]

Screen grabs of EPOC+ software

https://drive.google.com/drive/folders/1NCMRQgp9a_dj_DKNjAx8jxgrI3hvDm-r?usp=sharing

[luckham jerill]

Hello Tara,

Thank you for reaching EMOTIV.

May I know when the last time you used the headset? Also, I don’t see the felt pads on the electrodes (https://www.emotiv.com/setup/epoc/) to hydrate with saline solution.

If it has been awhile since you have used the headset, take pads and roll them firmly between your thumb and finger a few times to loosen up the weave. You can then soak them in the saline mixture for a few minutes before returning them to the sensor housings. After that process, they should get good data immediately. This should only be required for the first one or two uses, after that they should have loosened up. The sensors need to be fully saturated in the saline solution and when they are new, it takes a lot of solution to fully saturate them.

You can also try cleaning the electrode plates. Please follow the steps from this article – https://www.emotiv.com/knowledge-base/electrode-oxidation/

Please upgrade to the latest version of EmotivPRO as well. We have v2.7.1 available.

Please try these tips and keep us updated.

[xiangjin li]

In the process of measuring physiological data with EPOC X, we found that the experimental data of four consecutive people were cut off in the last four minutes, and the previous data were recorded. The data of these people were good before the last four minutes, but once they started from the last four minutes, they were all cut off. What’s the matter? During the experiment, the power of the instrument was above 70%, and the felt was wet enough.

[luckham jerill]

Hello Xiangjin.  Thank you for reaching EMOTIV and for reporting this issue.  For us to better assist you, please send an email to support@emotiv.com.  We would be requesting for more information from you to better assess the situation.  We look forward to your follow-up.

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