CH3_sight.txt

Electromagnetic energy that can be described in terms of wavelengths

Distance of one peak to the peak of the next

Wave height, determines brightness of the stimulus

Wave similarity (purity) or mix, determines

Wavelength of light determines

Multilayered light sensitive surface in the eye that records electromagnetic energy and converts it to neural impulses for processing in the brain

receptors in retina that are sensitive to light but not color

receptors in the retina that are sensitive to color

Very important part of retina, tiny area where vision is at its best

axons of special ganglion cells, carry visual information to the brain for processing

Place on the retina containing enither rods nor cones -- where optic nerve leaves the eye on its way to the brain

Point in brain where optic nerve fibers divide and cross midline of the brain

Visual pathways through the brain. Processing at the retina, optic nerve carries the data past the optic chiasm, and then to the processing area within the _______ and _____ cortex in the _____ lobe.

Neurons in the brain's visual system that respond to particular features in a stimulus

Simultaneous distribution of information across different neural pathways

Bringing together and integrating what is processed by different pathways or cells

Theory that color perception is produced by three types of cone receptors in the retina that are particularly sensitive to different but overlappping ranges of wavelengths.

Theory stating that cells in the visual system respond to red-green and blue-yellow colors. Cells might be excited or inhibited.

The principle by which we organize the perceptual field into stimuli that stand out and those that are left over.

School of thought interested in how people naturally organize perceptions according to certain patterns.

When we see disconnected or incomplete figures, we fill in the spaces and see them as complete figures.

When we see objects near each other, they tend to be seen as a unit

When we see objects similar to each other, they tend to be seen as a unit

The ability to perceive objects three-dimensionally

Depth cues that depend on the combination of left & right eyes and the way they work together

Difference in images "jumping back and forth" because of monocular vision

Binocular cue in depth and distance in which the muscle movements in our two eyes provide information about how deep and or far away something is

Powerful depth cues available from the image in one eye, either the right or left

This cue to the depth and distance of objects is based on what we have learned from experience about the standard sizes of objects.

All other things being equal, objects positioned higher in a picture are seen as farther away

Objects that are farther away take up less space on the retina. So, things that appear smaller are perceived to be farther away

We perceive an object that partially conceals or another object as closer

This cue involves changes in perception due to the position of the light and the position of the viewer

Texture becomes denser and finer the farther away it is from the viewer

The dumber the animal, the _____ the retina

How do humans perceive motion?

When we perceive a stationary object as moving

Recognition that objects are constant and unchanging even though sensory input about them is changing

the recognition that an object remains the same size even though the retinal image of the object changes

The recognition that an object retains the same shape even though its orientation to you changes

Recognition that an object remains the same color even though different amounts of lights fall on it