A microprocessor-based real-time BASIC random interstimulus interval generator with different probability density functions

Osaka, Naoyuki

doi:10.3758/bf03201386

Cited by 5 publications

(1 citation statement)

References 15 publications

(10 reference statements)

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“…Furthermore, a researcher can easily control the I/O ports by simply putting a bit pattern on the control registers. Programming for I/O processing is also simple by using PEEKing/POKEing at each I/O register address (Osaka, 1979a(Osaka, , 1979b(Osaka, , 1980. This type of a bit-addressable I/O register controls the LCS (Nitten Corporation), pulse motor (PM; Nippon Pulse Motor Corporation, PA62), glow modulator (GM) tybe (Sylvania Corporation, R1131C), monochromator (M; Jobin-Yvon, H20 with I/O slit width of I mm), and circular neutral density wedge (CW; Kodak, A6020).…”

Section: A Bit-addressable I/o Portmentioning

confidence: 99%

The Maxwellian optics laboratory automation using a personal computer

Osaka

1985

Behavior Research Methods, Instruments, & Computers

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Section: A Bit-addressable I/o Portmentioning

confidence: 99%

The Maxwellian optics laboratory automation using a personal computer

Osaka

1985

Behavior Research Methods, Instruments, & Computers

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Exponent of the Broca–Sulzer flash duration as a function of retinal eccentricity

Osaka

1982

J. Opt. Soc. Am.

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The flash duration producing maximum brightness-enhancement changes as a power function of luminance, that is, the time locus of the Broca-Sulzer flash duration TB, decreases as luminance L increases: TB = k x L beta , where beta is the duration exponent. The exponent of TB was estimated for 1-deg white flash fovea, 10-, 20-, 30-, 40-, 50-, and 60-deg temporal eccentricities of the dark-adapted human right eye. The following method of brightness maximization was used: the observer adjusted the duration of constant luminance flashes to produce a maximally bright flash. Duration was adjusted by rotating a microprocessor-based potentiometer. The results showed that the duration of the brightest flash TB decreased as L increased with the negative power exponent. Furthermore, the size of the negative exponent decreased as a function of increasing retinal eccentricity. Time-dependent brightness processing in the fovea and periphery is discussed in terms of the psychophysical brightness power function.

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