flicker fusion

Its flicker fusion frequency is thought to be much higher than that of humans.

This is due to the fly's much higher flicker fusion frequency.

The number of images per second needed to make them merge is called the flicker fusion frequency.

The flicker fusion threshold also is lower for a fatigued observer.

Flicker fusion threshold is higher for peripheral than foveal vision.

Flicker fusion threshold is related to persistence of vision.

The light receptors of a fly restore much more quickly and its flicker fusion frequency is 300 per second.

By the related flicker fusion threshold, these pulsating pixels appear steady.

The flicker fusion threshold also varies between species.

Critical Flicker Fusion rate or threshold, a concept in the psychophysics of vision.

"Critical flicker fusion with solid and annular stimuli".

Like all psychophysical thresholds, the flicker fusion threshold is a statistical rather than an absolute quantity.

For the purposes of presenting moving images, the human flicker fusion threshold is usually taken as 16 hertz (Hz).

Their flicker fusion frequency - the point at which an increasingly rapid flashing light is seen as a continuous beam - is too slow.

The goal is to display images sufficiently frequently to exceed the human flicker fusion threshold, and hence create the impression of a constant (non-flickering) source.

(See Frame rate and Flicker fusion threshold.)

The frequency at which flicker becomes invisible is called the flicker fusion threshold, and is dependent on the level of illumination.

Many mammals have a higher proportion of rods in their retinae than humans do, and it is likely that they would also have higher flicker fusion thresholds.

Nocturnal insects need time to gather enough light to form an image, and so their flicker fusion frequency is quite low, that of nocturnal crickets being about 45 per second.

If the light fluctuations are sufficiently rapid, the human visual system can no longer resolve them and the eye perceives the time average intensity without flicker (see flicker fusion threshold).

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.

The flicker fusion threshold is proportional to the amount of modulation; if brightness is constant, a brief flicker will manifest a much lower threshold frequency than a long flicker.

At the branching of two rough-walled tunnels, in the dim blue light cast by flickering fusion globes that had burned for more than two hundred years, Kirk found he could go no farther.

If the frame rate falls below the flicker fusion threshold for the given viewing conditions, flicker will be apparent to the observer, and movements of objects on the film will appear jerky.

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.