How to produce analog value from openbci 8bit board of any alphabet ?

ayushmh · March 2016

as some researches show our brain produces a specific value when we think of something...now suppose I'm thinking of an alphabet A how to do i get the analog value of A from the OBCI board...

wjcroft · March 2016

What you're suggesting, thinking a letter and having that drive BCI -- can you mention any related research papers? My impression is that a BCI speller based on "thinking a letter" is very difficult due to the huge amount of background activity in the brain. In other words, the signal to noise level is very very low. It's also only a single event, so you cannot do signal averaging. The existing spellers use repeated ERP or SSVEP, which provide enough repetitions to boost S/N ratio.

You've posted previously about the P300 speller. Did you try that?

http://openbci.com/forum/index.php?p=/search&Search=speller

ayushmh · March 2016

yes i did and that's why i was finding an alternative for speller...could you suggest one ?

wjcroft · March 2016

https://www.google.com/search?q=bci+speller

P300 and SSVEP dominate those search results. In that list however I did see this MI speller,

http://www.dcs.gla.ac.uk/~rod/publications/PerLee14.pdf

How to produce analog value from openbci 8bit board of any alphabet ?

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