Amplitude and fall-time discrimination of unit spike activity using TTL.
An inexpensive and reliable window discriminator simply constructed using TTL integrated circuits is described. The device will discriminate between unit spikes on the basis of amplitude alone or amplitude and fall-time, and simultaneous analysis of two separate spikes is possible. All pulse outputs and amplitude and fall-time windows may be displayed allowing the setting up of window criteria to proceed under direct visual control.
D000818:Animals; D003201:Computers; D005071:Evoked Potentials; D009474:Neurons / Q000502:physiology; D051381:Rats; D013788:Thalamus / Q000502:physiology