A possible scenario is that extra-retinal signals about pursuit enhance motion signal in the direction of the background motion during pursuit.
Other ganglion cells have been shown to have a directional sensitivity, responding to a moving spot of light only if this moves in a preferred direction and showing inhibition of background discharge if movement is in the null direction.
You can use the Edit → Free Transform command to change the shadow's position and shape to match the direction of light in the background photo.
We tested five Jacky dragons, Amphibolurus muricatus, a species characterized by stereotyped movement-based social signals, for their ability to discriminate the direction of drifting dots against simulated background motion noise of varying angular speeds.
IT is the earliest to use computer to simulate the biological visual attention mechanism, which mainly contrasts the color, brightness and direction of the image with the background to get a saliency image.
When the display was viewed in the periphery, observers primarily reported seeing reversals (i.e., they saw the ring rotate clockwise the opposite of the direction of foveal perception) when the background was in the mid-levels (i.e., pixel value 65, 128, and 195); observers did not report seeing reversals when the background was white and black (i.e., pixel value 20 and 255).
The aim of this paper is to provide a first step in this direction: four background subtraction algorithms, representative of the most commonly used techniques, have been experimentally evaluated.
The expression differences are overwhelmingly in the knockout-low direction, which may point to a general phenomenon of background dependence.
The angle between the direction of the minimum variance and the background magnetic field was 74°.
The scheme of the fabricated nanofluidic device for biosensing is shown in Figure 1a: two separated liquid cells filled with KCl solution are linked by nanopore chip; certain voltage is applied along the axial direction of the nanopore, which results in background ion current.
