Vision

What is the electromagnetic energy range of the visible spectrum?

400-700 nm.

What determines the color we see?

Wavelength.

What does a short wavelength correspond to?

Blue color.

What does a long wavelength correspond to?

Red color.

What determines the brightness of light?

Amplitude.

What is the function of the cornea in the eye?

It focuses light onto the retina.

What controls the entry of light into the eye?

The pupil.

What part of the eye adjusts the size of the pupil?

The iris.

What further focuses light onto the retina?

The lens.

What are the two types of photoreceptors in the retina?

Rods and cones.

What do rods detect?

Black, white, and gray.

What do cones detect?

Fine detail and color.

What are feature detectors?

Neurons that respond to edges, shapes, angles, and motion.

What are the primary colors of light?

Red, blue, and green.

What affects the brightness of perceived color?

Amplitude.

What is the Gestalt principle of figure and ground?

Separation of an image from the background.

What does the similarity principle in Gestalt psychology state?

Group similar objects together.

What does the proximity principle in Gestalt psychology mean?

Group nearby objects together.

What does the continuity principle suggest in terms of perception?

Prefer continuous patterns.

What is the closure principle in Gestalt psychology?

Filling in gaps to complete images.