An Analog Delay Circuit for On-Line Visual Confirmation of Discriminated Neuroelectric Signals

Abstract
An analog delay circuit which utilizes an inexpensive commercially available analog shift register is described. The delay circuit when used in conjunction with a window discriminator will display "on-line" visual confirmation of single neural events from extracellular recordings containing more than one spike class. The delay can be changed to include the entire spike waveform by adjusting a potentiometer in the delay circuit.