Peripheral Field Of View Research Articles

Visual monitoring in a simulated agricultural machinery operation.

Many agricultural machinery operations involve the monitoring of implements located behind the tractor operator. This visual monitoring task of a tractor operator was simulated in the laboratory. The effects of the type of task (steering only vs. steering plus rear monitoring), the operators' peripheral field of view, and the steering input frequency on operator performance were studied. Response times to visual stimuli located in the visual sphere surrounding the operator were determined. Visual field contours derived from the experimental data were plotted and used to illustrate variations in the operators field of view due to changes in the experimental variables.

Muon-induced visual sensations.

The visual phenomena induced by the passage of a pulse of extremely relativistic muons through the vitreous humor have been studied at the Alternating Gradient Synchrotron at Brookhaven National Laboratory. The visual phenomena include flashes that range from small crescents of light in the peripheral field of view to large clouds of light that fill the entire field of view as well as bright flashes with dark centers. Three subjects have been exposed to date. Arguments are given to show that the physical mechanism behind these flashes is Cerenkov radiation. Standard psychophysical techniques are used to determine the threshold for muoninduced visual sensations for one subject. Comparison is made with his pion treshold measured under the same condition.