Spectral Sensitivity of Scorpion Eyes and the Possible Role of Shielding Pigment Effect
نویسنده
چکیده
The structure of the median and lateral eyes of the scorpion and the nature of the electroretinogram (ERG) have been described elsewhere, as has been the basic arrangement of apparatus used in the electrophysiological aspects of this study (Machan, 1966, 1967). The position of the shielding pigment in scorpion eyes has been shown to play a role in the general sensitivity of the eye (Machan, 1968). For this reason an attempt has been made in this study to determine to what extent, if any, shielding pigment plays a part in the spectral sensitivity.
منابع مشابه
Investigation of Solvent Effect on CUA Codon Mutation: NMR Shielding Study
P53 is one of the gene that has important role in human cell cycle and in the human cancers too.Models of codon substitution make it possible to separate mutational biases in the DNA fromselective constraints on the protein, and offer a great advantage over amino acid models forunderstanding the evolutionary process of proteins and protein-coding DNA sequences. In thiswork, we investigated abou...
متن کاملApplication of Multi Flux Model to Predict Optical Performance of Titanium Dioxide Nanopigments
The area of nano-pigments is a limitless field with exceptional potential applications in industry, and their application is becoming the focus of many research groups worldwide in recent years due to their outstanding and tunable properties. Titanium dioxide (TiO2) nanoparticles, on the other hand, are among the most widely used pigment particles, and the interest for utiliza...
متن کاملThe Spectral Sensitivities of Single Receptor Cells in the Lateral, Median, and Ventral Eyes of Normal and White-Eyed Limulus
Spectral sensitivity curves can be distorted by screening pigments. We have determined whether this is true for Limulus polyphemus by determining, from receptor potentials recorded using intracellular microelectrodes, spectral sensitivity curves for normal animals and for white-eyed animals (which lack screening pigment). Our results show: (a) In median ocelli, the curve for UV-sensitive recept...
متن کاملSpectral Sensitivities of Wolf Spider Eyes
ERG's to spectral lights were recorded from all eyes of intact wolf spiders. Secondary eyes have maximum relative sensitivities at 505-510 nm which are unchanged by chromatic adaptations. Principal eyes have ultraviolet sensitivities which are 10 to 100 times greater at 380 nm than at 505 nm. However, two animals' eyes initially had greater blue-green sensitivities, then in 7 to 10 wk dropped 4...
متن کاملPerception-Based Rendering: Eyes Wide Bleached
Perception issues are a key factor in rendering Vision-Realistic images. This paper develops a novel spectral sensitive model of the Human Visual System (HVS) in order to simulate the bleaching effect in retinal photopigments. First, the Stiles-Crawford effect is taken into account to determine the pupil size of the adapted eye and to compute the directional sensitivity of the photoreceptors in...
متن کامل