Perception Flashcards
as experiences resulting from stimulation of the sensations
Perception
concious outcome of sense organs and projection regions.
sensation
a mental representation of a stimulus that is perceived.
percept
refers to a fact that perceptions are built from sensory input
botton up processing
how we interpret sensations influenced by our available knowledge, our experiences, and out thoughts.
Top-down processing
we often dont perceive stimuli that remain relatively contant over prolonged periods of time.
sensory adaptation
inability to identify a stimulus when it is embeddwd in a distracting background
Signal detection theory
4 types pf bottom-up theories
Direction perception
template theories
feature theories
recognition by components theory
the information in our sensory receptors is all we need to perceive anything.
direct perception
suggest that we have stored in our minds myriad sets of templates.
Template theories
4 kinds of demons
Image demons, Cognitive demons, Feature demons, Decision demons
Oliver Selfridge’s Pandemonium Model
Feature matching/theories
we quickly recognize objects by observing the edges of them and then decomposing the objects into geons
Recognition by components theory
absorption of physical energy by receptors
reception
translation of physical energy into electrochemical activity
Transduction
relationship between aspects of the physical stimulus and resultant nervous system activity
Coding
a curved, transparent structure taht serves to provide additional focus
Lens
the light sensitive lining in the eye
retina
provide tremendous spatial resolution. they also directly involved in our ability to perceive color.
cones
are specialized photoreceptors that work well in low light
Rods
is the transparent covering over the eye
Cornea
The visible spectrum in humas is associated with wavelength taht range drom _ to _ nm.
380-740nm
occurs when our perception of an object remains the same even when our proximal sensation of the distal object changes.
Perceptual constancy
the perception taht an object maintains the same size despite changes in the size of the proximal stimulus
size constancy