Shoutout to the old-school EEG cap I used for my first BCI experiments

Back in 2018, when I first started messing around with brain-computer interfaces, I was using this ancient wired EEG cap with a ton of gel in each electrode. It took me a good 20 minutes to set up, and I had to scrub my head with shampoo afterward. Now I use a dry electrode headset from a company called NeuroSky, and it takes about 30 seconds to put on. The change happened last year after I got tired of the cleanup and the mess. The new one connects to my laptop via Bluetooth, and the signal is good enough for basic cursor control. But I do miss the raw data you got from the old cap, it felt more detailed. Has anyone else switched from wet to dry electrodes and noticed a difference in signal quality for your own projects?

2 comments

2 Comments

the_miles5d ago

Wet electrodes always gave me cleaner signals for my own experiments, but the hassle was a dealbreaker. Dry ones are getting better, but you lose some of that fine detail in the lower frequencies. Miss the old cap myself sometimes, even if I don't miss the setup.

skyler_mitchell5d ago

the thing about "missing the old cap" though... I don't think it's the cap itself people miss. it's that you had to actually slow down and think about placement. with dry arrays you just slap em on and pray. that forced step of prepping the scalp and checking impedances meant you caught bad data before it happened. now we get cleaner signals at first but more artifacts sneaking through because nobody bothers to recheck anything during a session.

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