>>does anyone out there know where i can get information on biofeedback
>>such as monitoring points, waveforms, voltages, temperature and the pic
>>processor.
>> i'de like to build a brain wave analyzer with a pic processor that has
>>an infra red link to my computer can anyone help me in anyway with this
>>project
>
>The IR link is a good idea, as it will ensure that you don't get the
>mains connected to your body. Look for stuff on bioengineering and
>medical electronics. "Brain waves" are rather tricky; you need silver-
>silver chloride electrodes, low-noise connections, high gain
>amplification and lots of filtering. I'd start with something relatively
>straightforward like heart rate. I did some work on electro-oculography
>for eye-movement monitoring some years ago, and it was quite difficult.
>Heart rate monitoring was very easy.

Further to that comment about the silver electrodes, etc how about looking at EEG suppliers for some of the sensor gear?  It must be somewhat of a 'consumable' as far as the specialists go.  Further, they seem to use a saline solution/gel to ensure good contact, and work best when hair is 'clean' (no sprays, gels, grease etc).  This is assuming that biofeedback works something like EEG's.

MikeS