Hello everyone! I'm considering to buy an Emotiv-epoc portable 14-channel (https://www.emotiv.com/epoc/) EEG to conduct syntax and semantics processing experiments in school-aged children. I'm particularly interested on LAN, N400 and P600 ERPs. I wanted to ask if someone had experience with this sort of equipment, and if there was any reason (beyond the loss of spatial resolution) to avoid its use for research. Manufacturers claim that published researched has compared P300 ERPs obtained with traditional research equipment and the Emotiv-EPOC and found no significant differences on ERP parameters (https://peerj.com/articles/38/). I would like to hear opinions from people who have already tried it, or from those who have clear technical reasons for not using it.
Thank you so much for your attention
Might be hard to keep it on a school-aged child's head.
This more recent validation study might help http://dx.doi.org/10.1016/j.jneumeth.2015.05.025
The Emotiv Epoc should be able to record those brain potentials, with the caveat that the lack of sensors over the parietal region might limit such paradigms (though we have been experimenting with re-routing some electrodes to be over the p3/p4 areas rather than the alternative references). Emotiv have also pointed out that you can place the headset on backwards, yielding a very different electrode placement, though I haven't tried this.
As Yuri noted, head size is a limiting factor though beyond a certain age (head size, might need to test it) it should work. Positioning of the caps would need to be systematic, as they can slip down (especially when on a small head).
