Re: hi pete thx for very very helpfull answers---sampling rate?

[Guest guest]

Erez,For EEG training the difference is meaningless.  You are training signals that complete a full cycle between 1 second (very slow delta) and 1/40th of a second.  Even at 256 samples per second, you would have more than 6 samples for each waveform at 40 Hz.  At 2048 (which might be useful for training EMG, where you might be looking at signals up to 1/500th of a second), there would be 48 readings for every waveform of 1/40th second.

All EEG amplifiers work at 256 (at least the more recent ones), even though some may oversample at 1024 or 2048.  Those then " down-sample " to 256.  So it's kind of like buying a digital camera that shoots 8 megapixel images and then putting them on the internet at a resolution of less than 1 megapixel.  You have really gained nothing by it.

Pete-- Van Deusenpvdtlc@...http://www.brain-trainer.comUSA 305 433 3160BR 47 3346 6235

The Learning Curve, Inc.

On Thu, Jan 21, 2010 at 11:49 AM, Erez <erez1333@...> wrote:

 

i wonder what the diffrent between trainnig at 256 bps compare totrainnig at 2064 or so bps?

should i train at higher sampling rate in order to get better result