Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Kurt Hamdorf"'
Autor:
Peter Stus̆ek, Kurt Hamdorf
Publikováno v:
Journal of Comparative Physiology A: Sensory, Neural, and Behavioral Physiology. 184:99-106
Regulation of light flux by pupil mechanisms in the UV-sensitive superposition eye of owl-fly Ascalaphus macaronius (Neuroptera) was studied with a fast reflection microspectrophotometric technique. The spectral sensitivity of pupil reaction, which w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c126aaac00947e39440d4c69460ab25
https://doi.org/10.1007/s003590050309
https://doi.org/10.1007/s003590050309
Publikováno v:
Journal of Comparative Physiology A. 170
In the superposition eyes of the sphingid moth Deilephila and the neuropteran Ascalaphus, adjustment to different intensities is subserved by longitudinal migrations of screening pigment in specialized pigment cells. Using ophthalmoscopic techniques
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55d03670a16dc96fd5bc1dbb43eeca9b
https://doi.org/10.1007/bf00196904
https://doi.org/10.1007/bf00196904
Publikováno v:
Journal of Comparative Physiology A. 171
The spectral sensitivity of photoreceptors Rl-6 in the blowfly Calliphora erythrocephala has a characteristic UV fine spectrum due to a sensitizing pigment complexed with the visual pigment, P490. The present study concerns the identity and steric co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ecd03c85b30b78aed8ec9f628cbf2f5
https://doi.org/10.1007/bf00194108
https://doi.org/10.1007/bf00194108
Autor:
Kurt Hamdorf, Hendrik Eckert
Publikováno v:
Journal of Comparative Physiology ? A. 138:253-264
The landing response of flies can be elicited by approaching objects. Vertical edges (moving horizontally) are the most effective stimulus parameter of an approaching object. This most effective stimulus parameter was replaced by stripes moving apart
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3141af2a4891eea006ec1a54bc1961e
https://doi.org/10.1007/bf00657043
https://doi.org/10.1007/bf00657043
Publikováno v:
Zeitschrift für Naturforschung C. 42:973-976
Migration of the screening pigment in the compound eye of the sphingid moth Deilephila elpenor is altered by noradrenaline, as shown by microreflectometric measurements on eyes of intact moths and by transmission microscopy on preparations consisting
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af5fd212ea13f1026821a84d3ba91f9e
https://doi.org/10.1515/znc-1987-7-841
https://doi.org/10.1515/znc-1987-7-841
Autor:
Marc L. Zeise, Kurt Hamdorf
Publikováno v:
Vision Research. 23:887-893
Frog on-off retinal ganglion cells react to diffuse, large-sized stimuli not only with an “early response” and a “delayed response” but also with a “second off-response”. The intensity at which the delayed response becomes visible coincid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6aa4d58a61c344f5436c085b418ce571
https://doi.org/10.1016/0042-6989(83)90057-3
https://doi.org/10.1016/0042-6989(83)90057-3
Publikováno v:
Journal of Comparative Physiology ? A. 123:239-243
Microspectrophotometric measurements on the retina ofDeilephila elpenor were performed using fresh (cut by razor blade) as well as frozen (cryostate microtome) sections. Difference spectra from various parts of the rhabdom clearly showed that in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c43cee050d7d6868c189b1883da523bb
https://doi.org/10.1007/bf00656876
https://doi.org/10.1007/bf00656876
Publikováno v:
Zeitschrift für Naturforschung C. 44:992-998
Com pound Eye, Pigment Migration, Adrenaline, Octopamine, Noradrenaline The light-induced expansion of the screening pigment in the com pound eyes of the sphingid moth Deilephila and the owlfly Ascalaphus is counteracted by local application of norad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f2b2291b2d37d1e0ec351d7d9e214a8
https://doi.org/10.1515/znc-1989-11-1220
https://doi.org/10.1515/znc-1989-11-1220
Autor:
Kurt Hamdorf, G. Höglund
Publikováno v:
Journal of Comparative Physiology ? A. 143:305-309
1. The migration of the granules in the retinal screening pigment cells was studied in the compound eye of the mothDeilephila elpenor. Pigment position was determined by observing the size of the ‘glow’ caused by reflection of incident light. 2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da9193585b1ca10c1797a6f75c9a533f
https://doi.org/10.1007/bf00611166
https://doi.org/10.1007/bf00611166