Trabalho de evento-resumo periodico

Chromatic and luminance contrast sensitivities of carriers 11778 leber's hereditary optic neuropathy (LHON) from a giant pedigree in Brazil (2004)

• Authors:
  • Ventura, Dora Selma Fix (Orientador)
  • Quiros, P
  • Carelli, V
  • Salomão, S R
  • Gualtieri, Mirella
  • Oliveira, A G F
  • Canto-Pereira, L H M
  • Berezovisky, A
  • Sadun, A A
• Autor USP: VENTURA, DORA SELMA FIX - IP
• Unidade: IP
• Subjects: ACUIDADE VISUAL; ELETROFISIOLOGIA
• Language: Inglês
• Abstract: Purpose: To determine (1) luminance contrast sensitivity functions (CSF) in the spatial (SCSF) and temporal domains (TCSF) and (2) chromatic red/green (R/G) ans blue/yellow (B/Y) CSFs in 11778 LHON carriers with no visual complaints. Methods: The subjects, carriers (n=27) and age-matched controls (n=30), were tested monocularly in a darkened room. CSFs were measured with PSYCHO for Windows v 2.36 (Cambridge Research Systems), with a VSG 2/4 graphic board and a Sony FD Trinitron monitor, calibrated with a CS1000 Minolta spectrophotometer. The SCSF was measured with horizontal sinusoidal gratings at 0.3, 2, 6 and 12 cpd; the TCSF at 2, 10, 20 and 33 Hz using sinusoidal modulation of a 30 degree field with a superimposed spatial Gabor function. R/G and B/Y CSFs were determined with horizontal sinusoidal gratings of 0.3, 0.7 and 2 cpd, after equiluminance correction. The u'v (CIE 1976) chromaticity coordinate were: D6500: 0.198, o.468; Red: 0.258, o.454; Green: 0.133, 0.469; Blue: 0.210, 0.397 and Yellow: 0.188, 0.551. A non-parametric statistical analysis (Mann-Whitney Rank Sun test with=o.05) was performed. Results: Differences between the carriers and controls were statistically significant for all spatial frequencies of both chromatic and luminance spatial contrast modulation tests, but not for the temporal CSFs. R/G equiluminance settings of carriers differed from controls (p<0.001), requiring higher luminance in the green. However, the B/Y equiluminance settings of carriers and controls were not statiscally diffrent.
• Imprenta:
  • Publisher place: Lauderdale
  • Date published: 2004
• Source:
  • Título do periódico: Investigative Ophthalmology and Vision Science
  • Volume/Número/Paginação/Ano: v. 45, p. Abstract 1013, 2004
• Conference titles: Annual Meeting of the Association for Research in Vision and Ophthalmolgy of Genetic

---

How to cite

A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas

• ABNT

  QUIROS, P et al. Chromatic and luminance contrast sensitivities of carriers 11778 leber's hereditary optic neuropathy (LHON) from a giant pedigree in Brazil. Investigative Ophthalmology and Vision Science. Lauderdale: Instituto de Psicologia, Universidade de São Paulo. . Acesso em: 12 set. 2024. , 2004

• APA

  Quiros, P., Carelli, V., Salomão, S. R., Gualtieri, M., Oliveira, A. G. F., Canto-Pereira, L. H. M., et al. (2004). Chromatic and luminance contrast sensitivities of carriers 11778 leber's hereditary optic neuropathy (LHON) from a giant pedigree in Brazil. Investigative Ophthalmology and Vision Science. Lauderdale: Instituto de Psicologia, Universidade de São Paulo.

• NLM

  Quiros P, Carelli V, Salomão SR, Gualtieri M, Oliveira AGF, Canto-Pereira LHM, Berezovisky A, Sadun AA. Chromatic and luminance contrast sensitivities of carriers 11778 leber's hereditary optic neuropathy (LHON) from a giant pedigree in Brazil. Investigative Ophthalmology and Vision Science. 2004 ; 45 Abstract 1013.[citado 2024 set. 12 ]

• Vancouver

  Quiros P, Carelli V, Salomão SR, Gualtieri M, Oliveira AGF, Canto-Pereira LHM, Berezovisky A, Sadun AA. Chromatic and luminance contrast sensitivities of carriers 11778 leber's hereditary optic neuropathy (LHON) from a giant pedigree in Brazil. Investigative Ophthalmology and Vision Science. 2004 ; 45 Abstract 1013.[citado 2024 set. 12 ]

Últimas obras dos mesmos autores vinculados com a USP cadastradas na BDPI:

• Comparison of visual functions of two Amazonian populations: possible consequences of different mercury exposure
• Teste avalia visao em recem-nascidos . [Entrevista a cristina portella]
• Redução de células bipolares PKCa-IR retina de peixe tropical (Hoplias malabaricus) intoxicado por metilmercúrio
• Prejuízos neuropsicológicos de longo prazo de trabalhadores intoxicados com mercúrio
• Spectral sensitivity of photoreceptors in insect compound eyes
• Detection of shapes and illusory shapes by bees
• Desenvolvimento de uma situacao de condicionamento operante para estudos de psicofisica visual no beija-flor eupetomena macroura macroura
• Influencia do ambiente sobre os limiares de percepcao de dor e de tolerancia a dor - um estudo psicofisico
• Facilitação no fotorreceptor de insetos
• Primeiros registros eletrofisiológicos obtidos em células horizontais da retina do peixe de água doce