[PDF] Top 20 Repositório Institucional da UFPA: Chromatic spatial contrast sensitivity estimated by visual evoked cortical potential and psychophysics

... measure contrast sensitivity to equiluminant gratings using steady-state visual evoked cortical potential (ssVECP) and ...ssVECPs and psychophysics. The ... See full document

... The trapped-mode is defined by excitation of anti-symmetric currents in the rings. This mode is weakly coupled to free-space, therefore the radiation losses are low and the Q-factor is very high as compared ... See full document

... changes and among them was the first periodical manifestation O Correio Brasiliense, edited in London, considered for researchers a magazine to judge for the etimologia of the appositive ...Paris and New ... See full document

... a visual narrative which enables the reflection of the individual's representation of relationships and ...representation and how it converges to issues that go beyond the aesthetic formalism ... See full document

... adquirem outros graus de complexidade, ou seja, levando em conta o evento de enunciação em que tais relações ocorrem, estabelecem-se outras relações a que a autora denomina ideoló[r] ... See full document

... Isto seria o conhecimento prudente para uma vida decente, segundo Santos (1989, p. 58), que nos tranqüiliza quando fala:.. Tal como Descartes, no limiar da ciência moderna, exerceu a dú[r] ... See full document

... Da mesma forma, não sou exceção ao relacionar Leyla à fruição do texto prazeroso de Benedito Nunes: ela assina o prefácio de A clave do poético, novo livro do professor paraense.. Fa[r] ... See full document

... characteristics and spatial distances between sites have been used to explain species distribution in the environment, through Neutral (space) and Niche theory (environment) ...of spatial ... See full document

... sistema visual, Sale ...acuidade visual quando criados em ambientes ...córtex visual primário, acompanhada de um aumento na expressão de BDNF e redução da densidade das redes ...tálamo ... See full document

... autoavaliação institucional, a ser realizada pela Comissão Própria de Avaliação (CPA), também de caráter obrigatória, constante no ...autoavaliação institucional, utilizado pelo sistema e-MEC e pelas ... See full document

... Location and Protection Inc de Tucson no Arizona-USA e utilizado pelos sensores predecessores ao LPATS IV, mas é usado para todos os sensores subseqüentes indistintamente, utilizando uma normalização dos valores a ... See full document

... genes, and undergo limited mor- phological and biochemical alterations dur- ing their life cycle facilitates protective im- mune ...exist and a number of viral and bacterial infections cannot ... See full document

... VEP contrast-response were extended to different areas of the visual field, with investigations of how the visual pathways contribute to VEP generation (Baseler & Sutter, 1997; Klistorner, ... See full document

... compounds by eating con- taminated fish and found a decrease of ach- romatic contrast sensitivity and of color dis- crimination in the Lanthony D-15 ...findings by pre- senting ... See full document

... high spatial frequencies observed in our results for red-green chromatic sensitivity, VECP sensitivities were similar to those measured for suprathreshold amplitude as well as to CSF measured ... See full document

... the contrast sensitivity function, we used the psychophysical method of adjustments, in which contrast thresholds were obtained by varying contrast at each spatial ...stimulus ... See full document

... Visual evoked potentials (VEPs) have been widely used to assess visual functions in infants and children with or without mul- tiple handicaps, with high testability ...VEP spatial ... See full document

... females and 32 males) and Preterm Group: 30 neonates (11 females and 19 ...weeks and three days), whereas individuals in the Preterm Group were born at 34 weeks and four days (26 weeks ... See full document

... team and the equipments as well as the surgical procedures and the application of the tests were not changed during the fol- ...The contrast sensitivity thresholds obtained after refractive ... See full document

... local contrast adaptation might have not been complete [48]; whereas our stimuli were presented at contrasts descending stepwise from 100%, and each contrast level was presented at least 5 times for ... See full document