Visual Perception and Stimulus Size Quiz

During dark adaptation, why does sensitivity increase as the visual system becomes dark adapted?

At what retinal eccentricity does rod density reach a peak, resulting in lowest thresholds and highest sensitivity?

In the classic dark adaptation study, why were stimuli presented on the temporal retina at 20-degree eccentricity?

What property describes the eye's ability to add up quanta over a certain area?

Why is spatial summation critical diameter different for rods and cones?

Which type of vision is dominant in the first few minutes of dark adaptation before the rods take over?

What is dark adaptation?

During dark adaptation, the first 5-10 minutes are primarily dominated by which type of vision?

Where is the greatest sensitivity under photopic conditions?

How long does it typically take for full dark adaptation to occur?

What is the Stiles-Crawford effect related to?

Spatial summation in the eyes refers to:

What varies as the size (diameter) of a central stimulus increases?

Why does the perceived size of an object change as we get closer to it?

What can be easily calculated for circular spot stimuli in psychophysics experiments?

In dark adaptation, what needs to be considered about stimulus size and retinal sensitivity?

How can visual angle be calculated when knowing the absolute size and viewing distance?

Why is measuring the area occupied by a stimulus useful in psychophysics?