Sensation and Perception Flashcards
bottom-up processing
system in which perceptions are built from sensory input
inattentional blindness
failure to notice something that is completely visible because of a lack of attention
perception
way that sensory information is interpreted and consciously experienced
sensory adaptation
the reduction in sensitivity after prolonged exposure to a stimulus
top-down processing
interpretation of sensations is influenced by available knowledge, experiences, and thoughts
just noticeable difference
difference in stimuli required to detect a difference between the stimuli
subliminal message
message presented below the threshold of conscious awareness
Weber’s law
Ernst Weber’s discovery that the difference threshold is a constant fraction of the original stimulus and bigger stimuli require larger differences to be noticed
transduction
conversion from sensory stimulus energy to action potential
binocular cue
cue that relies on the use of both eyes
binocular disparity
slightly different view of the world that each eye receives
linear perspective
perceive depth in an image when two parallel lines seem to converge
linear perspective
perceive depth in an image when two parallel lines seem to converge
monocular cue
cue that requires only one eye
opponent-process theory of color perception
color is coded in opponent pairs: black-white, yellow-blue, and red-green
synesthesia
the blending of two or more sensory experiences, or the automatic activation of a secondary (indirect) sensory experience due to certain aspects of the primary (direct) sensory stimulation.
trichromatic theory of color perception
color vision is mediated by the activity across the three groups of cones
vestibulo-ocular reflex
coordination of motion information with visual information that allows you to maintain your gaze on an object while you move.
basilar membrane
thin strip of tissue within the cochlea that contains the hair cells which serve as the sensory receptors for the auditory system
cochlea
a fluid-filled, snail-shaped structure that contains the sensory receptor cells (hair cells) of the auditory system
hair cell
auditory receptor cell of the inner ear
incus
middle ear ossicle; also known as the anvil
malleus
middle ear ossicle; also known as the hammer
pinna
visible part of the ear that protrudes from the head
stapes
middle ear ossicle; also known as the stirrup
tympanic membrane
eardrum
binaural cue
two-eared cue to localize sound
cochlear implant
electronic device that consists of a microphone, a speech processor, and an electrode array to directly stimulate the auditory nerve to transmit information to the brain