Search Results - "Ventura, D. F."

Daily activity patterns influence retinal morphology, signatures of selection, and spectral tuning of opsin genes in colubrid snakes by Hauzman, E, Bonci, D M O, Suárez-Villota, E Y, Neitz, M, Ventura, D F

“…Morphological divergences of snake retinal structure point to complex evolutionary processes and adaptations. The Colubridae family has a remarkable variety of…”
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Effects of dietary methylmercury on liver and kidney histology in the neotropical fish Hoplias malabaricus by Mela, M., Randi, M.A.F., Ventura, D.F., Carvalho, C.E.V., Pelletier, E., Oliveira Ribeiro, C.A.

“…Methylmercury is a potent toxic present in Amazonian fish species due to gold mining activities. In the present work, we investigated the morphological effects…”
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Large sample population age norms for visual acuities obtained with Vistech-Teller Acuity Cards by Salomao, SR, Ventura, DF

“…To determine population age norms in the first three years of life for binocular and monocular grating visual acuity (VA) obtained with Vistech-Teller Acuity…”
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Neuropsychological dysfunction related to earlier occupational exposure to mercury vapor by Zachi, E C, D F, Ventura, Faria, M A M, Taub, A

“…We assessed the neuropsychological test performances of 26 patients (mean age = 41.5 +/- 6.1 years; mean years of education = 9.8 +/- 1.8; 20 males) diagnosed…”
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Twelve chromatically opponent ganglion cell types in turtle retina by Rocha, F A F, Saito, C A, Silveira, L C L, de Souza, J M, Ventura, D F

“…The turtle retina has been extensively used for the study of chromatic processing mechanisms. Color opponency has been previously investigated with…”
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Cone contrast influence on components of the pattern onset/offset VECP by Gomes, B. D., Souza, G. S., Saito, C. A., Da Silva Filho, M., Rodrigues, A. R., Ventura, D. F., Silveira, L. C. L.

“…Transient visual evoked cortical potentials (VECP) were recorded from the scalp of healthy normal trichromats (n = 12). VECPs were elicited by onset/offset…”
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A positive association between intrinsically photosensitive retinal ganglion cells and retinal nerve fiber layer thinning in glaucoma by Gracitelli, Carolina P B, Duque-Chica, Gloria L, Moura, Ana Laura, Nagy, Balazs V, de Melo, Geraldine R, Roizenblatt, Marina, Borba, Paula D, Teixeira, Sérgio H, Ventura, Dora F, Paranhos, Jr, Augusto

“…To assess the integrity of intrinsically photosensitive retinal ganglion cells (ipRGCs) using the pupillary light reflex in glaucoma patients. A…”
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Psychophysical analysis of contrast processing segregated into magnocellular and parvocellular systems in asymptomatic carriers of 11778 Leber's hereditary optic neuropathy by Gualtieri, M, Bandeira, M, Hamer, R D, Costa, M F, Oliveira, A G F, Moura, A L A, Sadun, F, De Negri, A M, Berezovsky, A, Salomão, S R, Carelli, V, Sadun, A A, Ventura, D F

“…We examined achromatic contrast discrimination in asymptomatic carriers of 11778 Leber's hereditary optic neuropathy (LHON 18 controls) and 18 age-match were…”
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Ultraviolet colour opponency in the turtle retina by Ventura, D F, Zana, Y, de Souza, J M, DeVoe, R D

“…We have examined the functional architecture of the turtle Pseudemys scripta elegans retina with respect to colour processing, extending spectral stimulation…”
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Colour vision and contrast sensitivity losses of mercury intoxicated industry workers in Brazil by Ventura, D.F., Simões, A.L., Tomaz, S., Costa, M.F., Lago, M., Costa, M.T.V., Canto-Pereira, L.H.M., de Souza, J.M., Faria, M.A.M., Silveira, L.C.L.

“…We evaluated vision loss in workers from fluorescent lamp industries ( n = 39) who had retired due to intoxication with mercury vapour and had been away from…”
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Behavioral and genetic color vision evaluation of an albino male capuchin monkey (Sapajus apella) by Henriques, Leonardo Dutra, Oliveira, J. C. P., Bonci, D. M. O., Leão, R. C., Souza, G. S., Silveira, L. C. L., Galvão, O. F., Goulart, P. R. K., Ventura, D. F.

“…Albinism is a rare phenotype that affects the pigmentation in eyes, hair, and skin. The effects of albinism in color vision are still unclear. Our study aimed…”
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spectral input systems of hymenopteran insects and their receptor-based colour vision by Peitsch, D, Fietz, A, Hertel, H, Souza, J. de, Ventura, D.F, Menzel, R

“…Spectral sensitivity functions S(lambda) of single photoreceptor cells in 43 different hymenopteran species were measured intracellularly with the fast…”
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Tetrachromatic input to turtle horizontal cells by Zana, Y, Ventura, D F, de Souza, J M, DeVoe, R D

“…Recent physiological experiments support behavioral and morphological evidence for a fourth type of cone in the turtle retina, maximally sensitive in the…”
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Contrast sensitivity threshold measured by sweep-visual evoked potential in term and preterm infants at 3 and 10 months of age by Oliveira, A G F, Costa, M F, de Souza, J M, Ventura, D F

“…Although healthy preterm infants frequently seem to be more attentive to visual stimuli and to fix on them longer than full-term infants, no difference in…”
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Chromatic spatial contrast sensitivity estimated by visual evoked cortical potential and psychophysics by Barboni, M T S, Gomes, B D, Souza, G S, Rodrigues, A R, Ventura, D F, Silveira, L C L

“…The purpose of the present study was to measure contrast sensitivity to equiluminant gratings using steady-state visual evoked cortical potential (ssVECP) and…”
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Long-term loss of color vision after exposure to mercury vapor by Feitosa-Santana, C, Costa, M F, Lago, M, Ventura, D F

“…We evaluated the color vision of 24 subjects (41.6 +/- 6.5 years; 6 females) who worked in fluorescent lamp industries. They had been occupationally exposed to…”
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Comparison of the reliability of multifocal visual evoked cortical potentials generated by pattern reversal and pattern pulse stimulation by Souza, G S, Schakelford, H B, Moura, A L A, Gomes, B D, Ventura, D F, Fitzgerald, M E C, Silveira, L C L

“…This study compared the effectiveness of the multifocal visual evoked cortical potentials (mfVEP) elicited by pattern pulse stimulation with that of pattern…”
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UV responses in the retina of the turtle by Ventura, D F, de Souza, J M, Devoe, R D, Zana, Y

“…To study processing of UV stimuli in the retina of the turtle, Trachemys dorbignii, we recorded intracellular responses to spectral light from 89 cells: 54…”
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An AC constant-response method for electrophysiological measurements of spectral sensitivity functions by de Souza, J.M., DeVoe, R.D., Schoeps, C., Ventura, D.F.

“…A number of methods have been used in the past to measure spectral sensitivity ( S(λ)) functions of electric responses in the visual system. We present here a…”
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Mercury toxicity in the Amazon: contrast sensitivity and color discrimination of subjects exposed to mercury by Rodrigues, A R, Souza, C R B, Braga, A M, Rodrigues, P S S, Silveira, A T, Damin, E T B, Côrtes, M I T, Castro, A J O, Mello, G A, Vieira, J L F, Pinheiro, M C N, Ventura, D F, Silveira, L C L

“…We measured visual performance in achromatic and chromatic spatial tasks of mercury-exposed subjects and compared the results with norms obtained from healthy…”
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