re ad conversion b clark nwu edu brian clark writes in article apr vax oxford ac uk roes vax oxford ac uk wrote i am working a data acquisition and analysis program to collect data from insect sensory organs stuff deleted another alternative is the use of the sound input port can you really make due with the non existent dynamic range of an bit converter of probably dubious linearity and monotonicity and perhaps ac coupled as well 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 action potentials per seconds and not in the amplitude of the signal or in details of the signal shape so the resolution of about you get with an 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 peter roes vax oxford ac uk
