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. 1967 May;7(3):279–296. doi: 10.1016/S0006-3495(67)86588-3

Dynamic Statistics of Crayfish Caudal Photoreceptors

Howard T Hermann, Richard E Olsen
PMCID: PMC1368032  PMID: 6035125

Abstract

Crayfish caudal photoreceptor units were monitored during transient and steady-state responses to light stimuli (step on, step off). A statistical analysis of interpulse interval distributions during quasi-stationary time periods was carried out. Firing statistics during transient conditions were superposable with statistics under whatever steady stimulation produced the same firing rate, indicating that mean firing rate is a sufficient statistic. Distributions encountered formed a continuum of possible shapes. Considerable variation in shape was found with temperature and also among species, with Orconectes clarkii tending to fire more regularly than Orconectes virilis. Some properties of O. virilis statistics are described, including a linear relation between mean and standard deviation, and a tendency for intervals to be nonindependent. The data are considered as constraints on closed form models of the photoreceptor nerve pulse generator.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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