Photoregeneration and the Adaptation Process in Insect Photoreceptors

Hamdorf, Kurt; Schwemer, Joachim

doi:10.1007/978-3-642-80934-7_16

Cited by 65 publications

(31 citation statements)

References 29 publications

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“…Second, we point to the analogy of t/K~ and (1-q)Ke to %'fR and (1-fR) c~M=c~.f~t, respectively; the latter terms emerge in the formalism used by Hamdorf and Schwemer (1975) and Tsukahara and Horridge (1977) (see also Hamdorf 1979).…”

Section: Discussionmentioning

confidence: 96%

“…The effective pupil absorbance spectra derived from the green and orange adapted state of one and the same cell appeared to be virtually identical. Furthermore, we found that in Musca the dark adapted spectral sensitivities (as well as those of the light adapted states) differ due to metarhodopsin screening (see Hamdorf and Schwemer 1975;Tsukahara and Horridge 1977).…”

Section: Change In Spectral Sensitivity By the Pupil Actionmentioning

confidence: 93%

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Spectral effects of the pupil in fly photoreceptors

1982

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Section: Discussionmentioning

confidence: 96%

Section: Change In Spectral Sensitivity By the Pupil Actionmentioning

confidence: 93%

Spectral effects of the pupil in fly photoreceptors

1982

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“…2a). The rapid shift in photo steady state indicates that not only rhodopsin to metarhodopsin conversion but also the opposite photochemical process is completed within the short time scale of 0.5 ms. [For, a photochromic substance with two photointerconvertible states reaches the new wavelength dependent photo-steady state exponentially as a function of time under steady illumination with in the exponent the sum of the rate constants of both states (Hamdorf and Schwemer, 1975;Goldsmith, 1978;Hochstein et al, 1978). ]…”

Section: Time Course Of Photoeonversion Of Blowfly Visual Pigmentmentioning

confidence: 99%

Rapid photopigment conversions in blowfly visual sense cells consequences for receptor potential and pupillary response

Muijser

Stavenga

1979

Biophys. Struct. Mechanism

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Abstract. Combined optical and electrophysiological experiments on the kinetics of visual pigment conversions in blowfly and the resulting pupillary response and late receptor potential are described. The photometrically detectable conversions of rhodopsin and metarhodopsin in the living wild type fly are completed within 0.5 ms. Prolonged pupillary responses and receptor potentials occur upon intense blue flashes. Subsequent intense red flashes abolish the prolonged responses in the case of both membrane potential and the pupil. The interrelation of potential and pupil is discussed.

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“…Since photochemical processes have time constants inversely proportional to light intensity (see e.g. Hamdorf and Schwemer, 1975) the change in slope of the transient is a clear indication for its photochemical nature. Subsequent to recording of the lowermost curve the first overlying one was measured after 1 rain darkness.…”

Section: Distinction Of Pupil Effects From Photochemical Processesmentioning

confidence: 99%

“…Since the medium within the rhabdom is made up of visual pigment a time dependence of the transmission within the rhabdom, Tri is effected by visual pigment processes, or, by a varying extinction coefficient ~:,. A number of relevant cases, where ~c v changes due to photochemical or dark regeneration processes in the visual pigment are discussed by Hamdorf and Schwemer (1975).…”

Section: Appendix Reflection From the Butterfly Rhabdommentioning

confidence: 99%