Reliability of a fly motion-sensitive neuron depends on stimulus parameters

Warzecha A-K, Kretzberg J, Egelhaaf M (2000)
The journal of neuroscience 20(23): 8886-8896.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
Download
OA
Abstract / Bemerkung
The variability of responses of sensory neurons constrains how reliably animals can respond to stimuli in the outside world. We show for a motion-sensitive visual interneuron of the fly that the variability of spike trains depends on the properties of the motion stimulus, although differently for different stimulus parameters. (1) The spike count variances of responses to constant and to dynamic stimuli lie in the same range. (2) With increasing stimulus size, the variance may slightly decrease. (3) Increasing pattern contrast reduces the variance considerably. For all stimulus conditions, the spike count variance is much smaller than the mean spike count and does not depend much on the mean activity apart from very low activities. Using a model of spike generation, we analyzed how the spike count variance depends on the membrane potential noise and the deterministic membrane potential fluctuations at the spike initiation zone of the neuron. In a physiologically plausible range, the variance is affected only weakly by changes in the dynamics or the amplitude of the deterministic membrane potential fluctuations. In contrast, the amplitude and dynamics of the membrane potential noise strongly influence the spike count variance. The membrane potential noise underlying the variability of the spike responses in the motion-sensitive neuron is concluded to be affected considerably by the contrast of the stimulus but by neither its dynamics nor its size.
Stichworte
Reliability; Motion vision; Variability; Model; Spike generation; Neural coding; Fly
Erscheinungsjahr
2000
Zeitschriftentitel
The journal of neuroscience
Band
20
Ausgabe
23
Seite(n)
8886-8896
ISSN
0270-6474
Page URI
https://pub.uni-bielefeld.de/record/1773473

Zitieren

Warzecha A-K, Kretzberg J, Egelhaaf M. Reliability of a fly motion-sensitive neuron depends on stimulus parameters. The journal of neuroscience. 2000;20(23):8886-8896.
Warzecha, A. - K., Kretzberg, J., & Egelhaaf, M. (2000). Reliability of a fly motion-sensitive neuron depends on stimulus parameters. The journal of neuroscience, 20(23), 8886-8896.
Warzecha, A. - K., Kretzberg, J., and Egelhaaf, M. (2000). Reliability of a fly motion-sensitive neuron depends on stimulus parameters. The journal of neuroscience 20, 8886-8896.
Warzecha, A.-K., Kretzberg, J., & Egelhaaf, M., 2000. Reliability of a fly motion-sensitive neuron depends on stimulus parameters. The journal of neuroscience, 20(23), p 8886-8896.
A.-K. Warzecha, J. Kretzberg, and M. Egelhaaf, “Reliability of a fly motion-sensitive neuron depends on stimulus parameters”, The journal of neuroscience, vol. 20, 2000, pp. 8886-8896.
Warzecha, A.-K., Kretzberg, J., Egelhaaf, M.: Reliability of a fly motion-sensitive neuron depends on stimulus parameters. The journal of neuroscience. 20, 8886-8896 (2000).
Warzecha, Anne-Kathrin, Kretzberg, Jutta, and Egelhaaf, Martin. “Reliability of a fly motion-sensitive neuron depends on stimulus parameters”. The journal of neuroscience 20.23 (2000): 8886-8896.
Alle Dateien verfügbar unter der/den folgenden Lizenz(en):
Copyright Statement:
This Item is protected by copyright and/or related rights. [...]
Volltext(e)
Access Level
OA Open Access
Zuletzt Hochgeladen
2019-09-06T08:48:08Z
MD5 Prüfsumme
5f77501ffb81b1bd375e18da95624a7d

Export

Markieren/ Markierung löschen
Markierte Publikationen

Open Data PUB

Web of Science

Dieser Datensatz im Web of Science®

Quellen

PMID: 11102498
PubMed | Europe PMC

Suchen in

Google Scholar