sensation and perception Flashcards
what is synesthesia?
when exposed to a certain physical experience, the perceptual experience is unusual from most
what is color-grapheme synesthesia?
automatically perceiving particular numbers are being coloured in a certain way
what are some practical applications that come from sensation and perception research?
airport screening, eye-witness testimony, radar operator, signage, driving
what is a common analogy for the eye and the ear?
microphone and camera
sensing and perceiving objects often seems?
automatic, effortless and seamless
what are the sensation and perception continuum steps?
- sensation: sense organs translating a representation of stimuli (raw data like sound, light, etc)
- transduction: characteristic of the stimulus are converted to nerve impulses
- feature detectors: neurons that respond to physical characteristics
- perception: organizes and gives meaning to an input
interpretation depends heavily on?
context
what do optical illusions do?
highjack our system to fool or trick us
what does the study of psychophysics refer to?
relationship between the physical characteristic/property of stimuli and the perceptual/sensory experience
(wavelengths into color)
psychophysicists wanted to know about the?
limits of sensitivity
what is an absolute threshold?
the absolute limit of sensitivity (the point where there is enough stimulus energy for us to be able to perceive it)
what is the difference threshold?
how much needs to be altered in order for us to notice the change
threshold and intensity have what kind of relationship?
inverse
if something has a high threshold, it has?
low sensitivity
what is decision criteria?
the standard of how certain we must be before ‘deciding’ whether or not a stimulus is present
