(n.) The state or quality of being achromatic; as, the achromatism of a lens; achromaticity.
Example Sentences:
(1) When achromatic lesions were excluded from the analyses, these differences were not found.
(2) A dose-dependent increase in chromatid lesions, i.e., achromatic lesions, chromatid breaks, chromatid deletions and triradial or quandriradial chromosomal exchange fiqures, was found.
(3) Targets were presented on a low photopic achromatic background, so that the red and green targets differed from the background both in intensity and in wavelength, whereas the achromatic target differed in intensity only.
(4) Stimulus parameters were selected to isolate the chromatic and achromatic systems.
(5) We have examined the contribution of these pathways to achromatic visual capacities by behaviorally testing spatio-temporal vision in monkeys with severe damage to the P beta (medium cell) pathway.
(6) We conclude that, for stimuli of either achromatic or chromatic contrast, peripheral spatial resolution is limited by post-receptoral mechanisms.
(7) Patients with high-tension glaucoma showed significant losses in both chromatic and achromatic sensitivities when compared with low-tension glaucoma patients.
(8) For MWS and LWS cone isolation we used a 15 Hz flickering test light to isolate the achromatic channel, and we modelled the resulting spectral sensitivity functions as a linear sum of LWS and MWS input.
(9) Photopically equivalent achromatic and long-wavelength adapting fields induced comparable increases in flicker ERG amplitude, while scotopically equivalent adapting fields had considerably different effects.
(10) The spectrum of damage observed for both cell types was primarily achromatic lesions affecting one or both chromatids.
(11) Similarities were found between the post-receptoral properties of these achromats and the properties of the isolated blue mechanism of normal vision and also the properties of normal luminance contrast processing in general.
(12) The achromatic epithelial cells (AEC), whose cellular materials remain unstained by several stains, e. g., H.E, PAS, Alcian blue, Orange G Anilin blue and Mucicarmin, are detected in the intestinal mucous epithelium of the Iar: Wistar Imamichi rat from the 19th day of gestation to the 21st day after birth.
(13) This is This is attributed to disturbances of the achromatic apparatus that occur with increasing age.
(14) We measured both the wavelength of the spectral achromatic point over a large range of intensities and yellow-blue hue-cancellation functions over the full spectrum and at several luminance levels in protanopes and deuteranopes.
(15) The present observations provide evidence for a visual pathway in human cortex homologous to the magnocellular pathway in macaque, a pathway involved in processing the low-contrast, achromatic, and moving components of visual stimuli.
(16) As illumination level increased, the ability to discriminate wavelength differences deteriorated for the blue cone monochromats, whereas, for the deutan achromats, wavelength discrimination remained relatively constant even near 100,000 scotopic trolands.
(17) The interocular transfer of low-frequency adaptation in the achromat was 50%, which is the same value obtained at higher frequencies.
(18) Our results can be explained in terms of a low-frequency band that represents the opponent-color response, and a high-frequency band that represents the achromatic response.
(19) As a visual device, it permits easy identification of a set of achromatic fringes that can be seen in any two-beam interferometer when a white-light source is observed through it.
(20) In all patients melanocarcinoma was IV-V degree according to Crark as in 2 women it was pigmented, but in 2 women--achromatic.