Last edited by Naramar
Monday, May 4, 2020 | History

3 edition of Two-flash thresholds as a function of flash luminance and area found in the catalog.

Two-flash thresholds as a function of flash luminance and area

Mark F. Lewis

Two-flash thresholds as a function of flash luminance and area

by Mark F. Lewis

  • 358 Want to read
  • 30 Currently reading

Published by Department of Transportation, Federal Aviation Administration, Office of Aviation Medicine in [S.l.] .
Written in English

    Subjects:
  • Visual perception -- Testing.

  • Edition Notes

    Also available online.

    Statementby Mark F. Lewis.
    SeriesAM -- 68-20., AM (United States. Office of Aviation Medicine) -- 68-20.
    ContributionsUnited States. Office of Aviation Medicine.
    The Physical Object
    Pagination1 v.
    ID Numbers
    Open LibraryOL15556076M

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Two-flash thresholds as a function of flash luminance and area by Mark F. Lewis Download PDF EPUB FB2

Two-flash thresholds as a function of flash luminance and area 1 v. (OCoLC) Material Type: Document, Government publication, National government publication, Internet resource: Document Type: Book, Computer File, Internet Resource: All Authors / Contributors: Mark F Lewis; United States.

Office of Aviation Medicine. The Ss were informed about the accuracy of their responses after each response.

For all three Ss the results replicated a previous finding that two-flash thresholds are a negatively accelerated function of flash luminance. but the function was shown to be dependent on area. a greater threshold change occurring at smaller by: For all subjects the results replicated a previous finding that two-flash thresholds are a negatively accelerated function of flash luminance, but the function was shown to be dependent on area, a greater threshold change occurring at smaller by: When two pulses1of light are delivered successively to the same part of the retina, they may or may not be seen.

Two-flash thresholds as a function of luminance in the dark-adapted eye. opt. Soc. Amer. 57, – (). CrossRef Google Scholar. Lewis, M. F.: Two-flash thresholds as a function of flash luminance and area.

Perc Cited by: Two-flash threshold was found to be an increasing function of comparison stimulus duration for durations of 3 to 22 msec. indicating that two-flash threshold does not measure tc. Increasing luminance in the range of to log mL.

enhanced the by: 3. Lewis MF: Two-flash thresholds as a function of flash luminance and area. AD Tobias JV: Cockpit noise intensity: Fifteen single-engine light aircraft.

AD Hasbrook AH: A comparison of effects of peripheral vision cues on pilot performance during instrument flight in dissimilar aircraft simulators. AD Experiment 2. Temporal impulse response functions were estimated from the TCSFs (e.g., Kelly, ; Roufs, ) determined for 4 of the normal observers who participated also in Experiment 1, and for 3 subjects with IN (Table 1).Stimuli were presented at a mean luminance of 65 cd/m 2 on the same Image Systems monitor that was used in Experiment by: 5.

A contextualistic theory of perception. Berkeley and Los Angeles: University of California press. MLA Citation. Book, Author: Hahn, Lewis Edwin, Description Two-flash thresholds as a function of flash luminance and area [electronic resource] / Mark F. Lewis. It is, therefore, of considerable importance to consider further the effects of changing various parameters of the visual task which serves as a criterion of flash blindness.

Luminance. Data are presented in Fig. 4 for each of three display luminances:0, and log mL. Failure of direction discrimination at detection threshold for both fast and slow chromatic motion Article (PDF Available) in Journal of the Optical Society of America A (35) 21 tips for better flash photography.

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A model of the mechanism for the perceived location of a single flash and two successive flashes presented around the time of a saccade Article in Vision Research 47(21) Author: Jordan Pola. When using an external flash you can use it alone or combine it with the builtin flash for even more lighting possibilities.

Some cameras let you use the built-in flash and an external flash at the same time. Here these two flash units were used to take a "portrait". The flash from the front was created by the built-in flash. The amplitude of the TIRF derived from the average normal TCSF data is much higher than the amplitude determined in Experiment 1 from 2-flash data (compare values in Table 2, Table 3; t [df=10] =p = × 10 −8).This difference reflects the observers’ substantially higher contrast sensitivity for a temporally and spatially extended sinusoidal flickering grating than for Cited by: 5.

The a Brightness sensation in a ganzfeld Fig. Brightness estimates as a function of light intensity for flashes of different duration in the ganzfeld. Medians of estimates for and sec flashes are indicated re- spectively by filled and unfilled by: Use a Two Flash Set Up for Experimental Photography.

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FAA/AM/22 - A comparison of effects of peripheral vision cues on pilot performance during. LOWER-LEVEL VISUAL PROCESSING AND MODELS OF LIGHT ADAPTATION LOWER-LEVEL VISUAL PROCESSING AND MODELS OF LIGHT ADAPTATION Hood, D.

Background: The Need for a Model of Adaptation For years, certainly since the work of Helmholtz, Hering, and Mach, the role played by the retina in human vision has been a.

Full text of "DTIC ADA Human Factors Engineering Bibliographic Series. Volume 5, Literature" See other formats. Full text of "Beginning experimental psychology" See other formats.Our harmonic analysis for these iterated function systems (IFS) (X, µ) is based on a Markov process on certain paths.

The probabilities are determined by a weight function W on X. From W we define a transition operator RW acting on functions on X, and a corresponding class H of continuous RW-harmonic functions.The Effect of Stimulus Area on Global Motion Thresholds in Children and Adults.

such as the “two flash” test is a simple estimate of temporal Mean luminance of the display used for the behavioural task was cd/m 2. Refresh rate was 85 Hz, resolution was × pixels. Viewing distance was cm, head movements were Cited by: 1.