Card Set Information
psy101 senses sight
Chapter 3, PSY101, sight
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.
Thalamus, visual, occiptal
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
Height in the field of view
Objects that are farther away take up less space on the retina. So, things that appear smaller are perceived to be farther away
Linear perspective and relative size
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?
Specialized neurons, feedback from our body, and environmental cues
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