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strength-duration
Based on physiological properties of synapse, soma and axon, this paper presents and analyses a model of neural circuit which can approximately simulate input-output relation, strength-duration curve, adaption and nonlinear connection of real neuron.
      
The threshold strength-duration relationships were determined for the phototactic excitation of Rhodospirillum rubrum by various pulses and pairs of pulses of change in light intensity.
      
The CA1 and LS responses to CA3 stimulation showed similar strength-duration, strength-amplitude and frequency following characteristics.
      
Strength-duration properties of a rapidly adapting insect sensory neuron
      
1.A technique was developed to measure the strength-duration relationship for action potential initiation in the rapidly adapting sensory neuron of the femoral tactile spine in the cockroach,Periplaneta americana.
      
Strength-duration data were well fitted by theoretical relationships derived for these conditions and assuming a constant charge threshold for the axon.
      
The model is shown to produce strength-duration curves for accomodation which are compatible with available data from real neurons.
      
The sensitivity of the strength-duration (S-D) relationship to changes in the parameters describing the sodium channel of mammalian neuronal membrane was determined by computer simulation.
      
An apparatus is described which is capable to determine cardiac excitability through the automatical registration of the strength-duration curve.
      
The duration and intensity of the stimuli were varied to obtain strength-duration curves.
      
A strength-duration curve was drawn up for the preparation concerned, using magnetic stimulation.
      
Ventricular defibrillating threshold: strength-duration and percent-success curves
      
With the advent of so many different types of defibrillator, it is important to be able to specify the defibrillation threshold, which has frequently been described by the classical strength-duration curve.
      
The mechanism of defibrillation is discussed, and the concepts of the strength-duration curve and percent-success against shock-strength curves are compared.
      
Extracellular stimulation of the three models is used to study their strength-duration and current0distance (I-X) relationships, conduction velocity (CV) and action potential shape.
      
Strength-Duration Testing of the External Anal Sphincter in Females with Anorectal Dysfunction
      
PURPOSE: The strength-duration test has been suggested as a means of assessing external anal sphincter function.
      
This study was designed to investigate this claim by comparing the strength-duration test with established measures of external anal sphincter function.
      
RESULTS: The strength-duration test was repeatable.
      
There were no correlations between the strength-duration test and resting pressure in the anal canal.
      
 

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