


It clearly depends on the type of questions you are asking but in many
cases it will do fine. The critical information from the neuron is in
the firing frequency (maximum about 100 action potentials per
seconds), and not in the amplitude of the signal or in details of the
signal shape. So the resolution of about 0.4 % you get with an 8 bit
convertor is more then sufficient.

AC coupling does not have to be a problem either, since in many cases
you are not interested in the DC level. My pre amplifier is AC coupled
also. The critical point is the lowest frequency that will pass. If
the cutoff point is to high, the action potentials will be slightly
distorted. But even that normally does not matter since it is the
occurrence of the spike that is important. 

However, I do want to know what exactly I can expect before I start
battling with the toolbox to get it going. As yet I have no clue were
to start looking for the technical specifications.