title: Amplitude and fall-time discrimination of unit spike activity using TTL.
abstract: 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.
mesh_terms: D000818:Animals; D003201:Computers; D005071:Evoked Potentials; D009474:Neurons / Q000502:physiology; D051381:Rats; D013788:Thalamus / Q000502:physiology