flicker fusions การใช้

• By the related flicker fusion threshold, these pulsating pixels appear steady.
• :This limit is known as the flicker fusion threshold, so see there.
• :What we perceive when flicker fusion kicks in is more or less the average light intensity.
• The frequency at which flicker becomes invisible is called the flicker fusion threshold, and is dependent on the level of illumination.
• :Just a note here, the flicker fusion threshold of the human eye is not an absolute measure, not even for the same person.
• The perceived difference is due to flicker fusion threshold, which is defined as the frequency that a flashing light appears " steady " to the human eye.
• Flicker fusion thresholds decline towards the periphery, but do that at a lower rate than other visual functions; so the periphery has a relative advantage at noticing flicker.
• Parrots'flicker fusion rate _ the frequency at which their eyes convert a series of still images into a continuous motion picture _ is much higher than that of humans.
• Ancillary equipment is used for specific cognitive tests such as a postural stability ( sway ) meter, a critical flicker fusion device or joysticks for CDR's tracking test.
• Individuals with high flicker fusion threshold are particularly affected by electromagnetic ballasts : their EEG alpha waves are markedly attenuated and they perform office tasks with greater speed and decreased accuracy.
• If the light fluctuations are sufficiently rapid ( faster than the flicker fusion threshold ), the human visual system can no longer resolve them and the eye perceives the time average intensity without flicker.
• Different points in the visual system have very different critical flicker fusion rate ( CFF ) sensitivities; the overall threshold frequency for perception cannot exceed the slowest of these for a given modulation amplitude.
• Try searching the www or use Google Scholar with keywords like " flicker fusion frequency " or " temporal contrast sensitivity function . "-- Wjbeaty 02 : 37, 17 January 2007 ( UTC)
• The lighting used in film projectors is typically an incandescent lamp or arc lamp, which does not flicker, but some degree of flicker is desirable to help decrease the flicker fusion threshold comfortably below film's typical framerate of 24 fps.
• With AC, the LEDs in each pair take turns emitting light, on alternate half-cycles of supply power, greatly reducing the strobing effect to below the normal flicker fusion threshold of the human eye, and making the lights brighter.
• For example, for a series of flashed still-pictures to appear steady, the frequency of flashing has to be at a rate greater than the flicker fusion threshold, which for humans is about 60 Hz, or 60 cycles per second.
• You might want to look at flicker fusion for one possible interpretation of an effective frame rate for the human visual system, but it's actually far more capable than that suggests in special cases : hence the need for things like high frame rate video in VR systems.