wjcroft

Peter and Joachim, hi again. I thought you guys might have some interest in this unique type of EEG elastic cap, using saline solution and sponges. It might possibly last over an 8 hour session. http://openbci.com/forum/index.php?p=/discussion/1663/greentek-gelfree-s-eeg-cap I just posted an update at the end of the thread, asking Kris if he thought it might have application in your lucidity project. See my speculations in that last post. Do you guys have a userid on the forum, so you can post followup questions? You can also contact Kris through Private Message on the forum. Regards, William

Peter and Joachim, your perseverance inspires. Chaos is relative. We're all wading through it right now. Synchronicities and collaborations continue to present themselves. Some dream-like qualities there for sure. ;-) Regarding your electrodes: I'd suggest focusing on the simplest thing that can work reliably. It might not be a dry type at all. What specific 10-20 locations are you hoping to monitor? Regards, William Croft, OpenBCI

Aladdin LD headset, technical details, https://patents.google.com/patent/US9737683B2/

Looking forward to test driving your LD induction on OpenBCI. Regarding channel counts, there are also some spare (lower resolution) analog / digital I/O pins on top of the Cyton mainboard. Not sure if you guys follow commercial developments, but the Aladdin team is moving slowly forward if you check their timeline at the bottom of this page. As you know, they were on the verge of product release (2016 or 2017), then pulled back for more R&D work. http://aladdindreamer.com/

Peter thanks. Curious about your channel / 10-20 site allocation. Do you actually need all 16 channels? Here is a thread on the forum showing a typical PSG layout. My hunch is that the Daisy shield in this application may add additional fragility and more volume / area to deal with regarding bed pillow / sheets / clothing brushing up against it. http://openbci.com/forum/index.php?p=/discussion/1504/using-ultracortex-mark-iv-for-sleep-study

Peter, thanks for this update. As far as the range of headsets / caps that could be used for sleep EEG, have you considered the forces and pressures exerted -- as the head naturally rolls around on the pillow over night? Would some kind of flat elastic cap or band system, be less prone to artifacts? Regards, William

Peter and Joachim, congratulations on reaching your funding goal! Look forward to following your project milestones.