Document Detail

A window amplitude discriminator with adjustable upper and lower thresholds.
MedLine Citation:
PMID:  986629     Owner:  NLM     Status:  MEDLINE    
An amplitude window discriminator is described which permits selection of spikes from a multi-unit recording, provided the signal-to-noise ratio is high enough. The device can be built at relatively low cost and time. The circuitry permits analysis of the positive or the negative deflections of the recorded signals. In Part One of the circuitry, the signals are pre-amplified and may be inverted in polarity. In Part Two, the pulses are compared to a variable lower threshold voltage, and low amplitude noise is eliminated. Part Three depicts a logic circuit for elimination of disturbing high-amplitude signals, whose output delivers digital pulses, each corresponding to an original signal (e.g. a neuronal spike) of a certain amplitude.
W Ohl; M Fallert
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pflügers Archiv : European journal of physiology     Volume:  364     ISSN:  0031-6768     ISO Abbreviation:  Pflugers Arch.     Publication Date:  1976 Jul 
Date Detail:
Created Date:  1976-10-29     Completed Date:  1976-10-29     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0154720     Medline TA:  Pflugers Arch     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  199-202     Citation Subset:  IM    
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MeSH Terms
Amplifiers, Electronic
Electrophysiology / instrumentation
Neurons / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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