Module 3: Visual Perception Flashcards
the set of processes by which we recognize, organize, and make sense of the sensations we receive from environmental stimuli
Perception
HE provided a useful framework for
studying perception.
James Gibson
object in the external world (ex. Falling tree)
Distal object
pattern produced by the event (sound wave, reflected light,etc.)
Informational medium
when informational medium comes in contact with sensory receptors (retina absorbs light waves)
Proximal Stimulation
stimulus is created in you that reflects the properties of the external world (image of falling tree)
Perceptual Object
4 by James Gibson
Distal object
Informational medium
Proximal Stimulation
Perceptual Object
focus on qualities of
stimulation.
sensation
occurs as information is used to serve further goals.
Cognition
receptor cells adapt to constant
stimulation by ceasing to fire until there is a change in stimulation.
- Through this, we may stop detecting the presence of a stimulus
Sensory Adaptation
when your eyes are exposed to a uniform field of stimulation, you will stop perceiving that stimulus after a few minutes and see just a gray field instead
Ganzfeld Effect
WHICH layer of the retina contains the photoreceptors (Rods and Cones),
third
WHICH layer consists
of three kinds of
interneuron cells. Amacrine
cells and horizontal cells
second
WHICH layer is the closest to the front, outward-facing surface of the eye—is the layer of ganglion cells, whose axons constitute the optic nerve.
First
short and thick photoreceptors and allow for the perception of color.
cones
the path the visual information takes from its entering the human perceptual system through the eyes to its being
completely processed.
pathway
2 types of Pathway
- Dorsal Pathway
- Ventral Pathway
where pathway ; location and motion information ; parietal lobe
Dorsal Pathway
what pathway ; color, shape, identity of visual stimuli ; temporal lobe
Ventral Pathway
two pathways refer not to what things are and to where they are, but rather, to what they are and to how they function.
what/how hypothesis
found in ventral stream; identification of objects
What Pathway
dorsal stream ; movements in relation to the objects that have been identified through the what pathway
How pathway
describe approaches where perception starts with the stimuli whose appearance you take in through your
eye.
Bottom-up theories
These theories then work their way down to considering the sensory data, such as the perceptual stimulus
Top-down theories,