| Abstract: | The design of a microcomputer controlled neurophysiological stimulator is described. The stimulator is a complete self contained computer system with the capability of controlling multiple completely independent pulse trains. The stimulator possesses a custom program console via which an operator can specify the following parameters: pulse width, pulse frequency, number of pulses in a train, train frequency, triggering mode (internal, external, manual), pulse delay, and a random option for any parameter with preset boundaries. Limits of the stimulator are .1 ms to 1 sec. for the pulse width and 5 khz to .5 hz for the pulse frequency. The system is designed around a Motorola 6800 microprocessor. The stimulator also has the capabilities of communicating with a larger computer, enabling the implementation of even more complex and sophisticated experimentation. |
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