For long-time acquisition of action
potentials (AP), a data acquisition system
was designed. It consists of 4 filters, a
comparator, an analog I/O port, and a digital
delay line. Several novel ideas were proposed
and implemented in this system: spike-trigger
acquisition, pre-trigger acquisition, real-time
display of the digitized data, and a digital
delay line. This system is helpful for multiunit
recording.
