VISUAL PERCEPTION Flashcards
(59 cards)
blues and greens can be confused, but yellows also can seem to disappear or to appear as light shades of reds
Tritanopia
the object in the external world
Example: The apple on the table itself, which is the source of the sensory input.
distal object
– how the information of the object is presented and delivered
Example: Light reflected from an apple serving as the medium for visual perception.
informational medium
occurs when the information meet the appropriate sensory receptor
Example: Light rays from a nearby lamp hitting the retina.
proximal stimulation
created in the brain that reflects the properties of the external world
Example: Seeing a pencil on a desk and perceiving it as “a pencil,” distinct from its surrounding objects.
perceptual object
- Information flows through the system of sensation, perception, and cognition
- Questions of ___ focus on qualities of stimulation
- Questions of ___ focus on identity and form, pattern, and movement
- Questions of ___ focus on how the information will be used on further goals
- We never can experience through vision, hearing, taste, smell, or touch exactly the same set of stimulus properties we have experienced before
sensation
perception
cognition
- receptor cells adapt to constant stimulation by ceasing to fire until there is a change in stimulation
- Through __-, we may stop detecting the presence of a stimulus
Example: Not noticing the smell of a perfume after wearing it for a while.
sensory adaptation
a mental representation of a stimulus that is perceived
Example: Mentally visualizing a specific fragrance (like roses) even without physically smelling it at the moment
mental percept
describe approaches where perception starts with the stimuli whose appearance you take in through your eye
Example: Identifying a novel object by piecing together its shape, texture, and color without prior familiarity.
bottom-up theories
state that perception is driven by high-level cognitive processes, existing knowledge, and the prior expectations that influence perception
Example: Reading messy handwriting but understanding the word because your brain fills in the gaps based on context.
top-down theories
- Proposed by___
- States that the information in
our sensory receptors, including the sensory context, is all we need to perceive anything - This view is sometimes also
called ____ - We use texture gradients as
cues for depth and distance
as you move, sesnory system directly picks up information aout depth
ex: The texture of the ground changing as you step on leaves or soil. Theses cues are perceived directly without needing prior experience or mental reconstruction
Theory of direct perception
James J. Gibson
ecological perception
revealed that infants quickly
develop many aspects of
perceptual awareness, including depth perception
* may also play a role in interpersonal situations when we try to make sense of others’ emotions and intentions
Example: A driver perceives the layout of the road and adjusts their speed immediately based on its visual flow.
direct perception
specific : visual cliff experiment
- Suggest that we have stored in our minds myriad ets of templates
*___are highly detailed
models for patterns we
potentially might recognize
Example: Recognizing the letter “A” regardless of font style because it matches a mental template stored for “A.”
templates theory
Templates
- According to these theories, we attempt to match features of a pattern to features stored in memory, rather than to match a whole pattern to a template or a prototype
- One such feature-matching
model has been called
____ by Oliver
Selfridge
hinihimay natin ang features (color, line, shape) at compare sa stored feature sa memory
feature matching theories
pandemonium
receives a retinal image
Example: Detecting a blurry image of a letter “R” as it first appears in the visual field.
image demon
calls out when there are matches between the stimulus and the given feature.
Example: Recognizing the straight lines and curved shapes in the letter “R.”
feature demon
shouts out possible patterns stored in memory that conform to one or more features
Example: Suggesting that the combination of features might form the letter “R” or “P.”
cognitive demon
decides on what has been seen, based on which cognitive demon is shouting the most frequently
Example: Concluding that the letter is indeed “R” and not “P.”
decision demon
___-constitute the
small-scale or detailed aspects
of a given pattern
Example: While looking at a painting, noticing the intricate brush strokes and patterns within a small corner.
- ___- - the features
that give a form its overall
shape
Example: Looking at the same painting and seeing the whole image as a landscape without focusing on individual details.
local features
Global Features
occurs when the person more
readily identifies the global feature
Example: Observing a large letter “H” made up of smaller letters “E.” You first perceive the large “H” (global feature) before noticing the individual “E”s (local features).
global precedence effect
occurs when the person more readily identifies the local feature
Example: Looking at a forest, someone first notices the shape and details of individual leaves on a tree rather than seeing the forest as a whole.
local precedence effect
- Proposed by Irving Biederman
- We achieve stable 3-D mental
representations of objects by
manipulating a number of simple 3-D geometric shapes called ___ (for geometrical ions) - A small number of ___can be used to build up many basic
shapes and then myriad basic
objects
recognition-by-components theory
geons
- The perceiver builds a cognitive understanding of a stimulus
- The concepts of the perceiver
and his or her cognitive processes influence what he or she sees - Perception both affects and is
affected by the world as we
experience it - Also known as the ___
ang brain ang gumagawa ng meaning mula sa sensory information
constructive perception
intelligent perception
are the influences of the surrounding environment on perception
Ex: Visual Context: A letter like “B” might look like “13” when placed between numbers (12, 13, 14) but appear as a letter “B” in an alphabetic context (A, B, C).
context effects