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. 1975 Mar;246(2):333–350. doi: 10.1113/jphysiol.1975.sp010893

Linear and non-linear performance of transducer and pupil in Calliphora retinula cells.

J T Leutscher-Hazelhoff
PMCID: PMC1309421  PMID: 1142250

Abstract

1. Intracellular recordings have been made from the blowfly (Calliphora erythrocephala) retinula cell; apart from the transducer mechanism, these cells also feature a pupil mechanism. 2. At several mean intensity levels, within the apparently linear range of response, frequency characteristics of amplitude and phase and responses to 'delta'-flashes and 'delta'-flash pairs have been obtained. 3. Fourier methods have shown these responses to be mutually compatible, confirming linearity in these circumstances. 4. Non-linear behaviour can be made to appear at the lower frequencies when the modulation depth is increased. 5. Non-linearities can also appear through application of the superposition test: a low frequency sine wave, modulated so as to elicit an apparently linear response, and a high frequence sine wave which does not give rise to non-linearity even at the highest modulation depths can, when superimposed, yield a greater response to the latter when situated at the minima of the former than at its maxima. 6. At frequencies above approximately 1 Hz these superposition non-linearities are attributed to the transducer mechanism gain control. Below this frequency the pupil mechanism takes part considerably in the retinula cell's total observed gain control: its characteristics remain yet to be cleared up. 7. The transducer's linear and non-linear properties fit in closely with those of the Fuortes-Hodgkin model which couples increases in gain and time constants. 8. The Fuortes-Hodgkin model will probably require some quantitative modifications in the originally treated case of Limulus, on account of its pupil. 9. Finally, the merits of Veringa's diffusion model, and the possibility of eventually joining this model with the Fuortes-Hodgkin one are pointed out briefly.

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Selected References

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

  1. Dodge F. A., Jr, Knight B. W., Toyoda J. Voltage noise in Limulus visual cells. Science. 1968 Apr 5;160(3823):88–90. doi: 10.1126/science.160.3823.88. [DOI] [PubMed] [Google Scholar]
  2. FUORTES M. G., HODGKIN A. L. CHANGES IN TIME SCALE AND SENSITIVITY IN THE OMMATIDIA OF LIMULUS. J Physiol. 1964 Aug;172:239–263. doi: 10.1113/jphysiol.1964.sp007415. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Horridge G. A., Barnard P. B. Movement of palisade in locust retinula cells when illuminated. Q J Microsc Sci. 1965 Jun;106(2):131–135. [PubMed] [Google Scholar]
  4. Kelly D. H. Diffusion model of linear flicker responses. J Opt Soc Am. 1969 Dec;59(12):1665–1670. doi: 10.1364/josa.59.001665. [DOI] [PubMed] [Google Scholar]
  5. Kirschfeld K., Franceschini N. Ein Mechanismus zur Steuerung des Lichtflusses in den Rhabdomeren des Komplexauges von Musca. Kybernetik. 1969 May;6(1):13–22. doi: 10.1007/BF00288624. [DOI] [PubMed] [Google Scholar]
  6. Knight B. W., Toyoda J. I., Dodge F. A., Jr A quantitative description of the dynamics of excitation and inhibition in the eye of Limulus. J Gen Physiol. 1970 Oct;56(4):421–437. doi: 10.1085/jgp.56.4.421. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Kuiper J. W., Leutscher-Hazelhoff J. T. Linear and nonlinear responses from the compound eye of Calliphora erythrocephala. Cold Spring Harb Symp Quant Biol. 1965;30:419–428. doi: 10.1101/sqb.1965.030.01.041. [DOI] [PubMed] [Google Scholar]
  8. LEUTSCHER-HAZELHOFF J. T., KUIPER J. W. RESPONSES OF THE BLOWFLY (CALLIPHORA ERYTHROCEPHALA) TO LIGHT FLASHES AND TO SINUSOIDALLY MODULATED LIGHT. Doc Ophthalmol. 1964;18:275–283. doi: 10.1007/BF00160579. [DOI] [PubMed] [Google Scholar]
  9. MILLER W. H. Fine structure of some invertebrate photoreceptors. Ann N Y Acad Sci. 1959 Nov 12;74(2):204–209. doi: 10.1111/j.1749-6632.1958.tb39545.x. [DOI] [PubMed] [Google Scholar]
  10. Menzel R. Feinstruktur des Komplexauges der Roten Waldameise, Formica polyctena (Hymenoptera, Formicidae. Z Zellforsch Mikrosk Anat. 1972;127(3):356–373. [PubMed] [Google Scholar]
  11. Miller W. H., Cawthon D. F. Pigment granule movement in Limulus photoreceptors. Invest Ophthalmol. 1974 May;13(5):401–405. [PubMed] [Google Scholar]
  12. Pinter R. B. Sinusoidal and delta function responses of visual cells of the Limulus eye. J Gen Physiol. 1966 Jan;49(3):565–593. doi: 10.1085/jgp.49.3.565. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Veringa F. Diffusion model of linear flicker responses. J Opt Soc Am. 1970 Feb;60(2):285–286. doi: 10.1364/josa.60.000285. [DOI] [PubMed] [Google Scholar]

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