physical Flashcards
sensation
your body taking in raw info from the outside world
bottom up processing
how sensory system bring in raw info to be processed by our brain forming phycological experience of outside world
psychophysics
study of how physical stimuli are translated into a psychological experience
two central figures in psychophysics
webber & Fechner
Absolute threshold
smallest amount of sense that you need to detect it
high AT=needs more energy to detect
difference threshold
smallest amount of energy CHANGE you need to detect
high DT= need more energy to notice
weber’s law
as the intensity of a stimulus increases, so does it’s JND, proportionally
signal detection theory
past
expectations
motivation
level of fatigue
sensory adaptation
get used to a stimulus that you stop noticing it
transduction
your brain taking information and changing it into a signal you can read
wavelength
horizontal distance from one peak to the next
determines pitch
frequency
number of waves that pass a point in space during any time interval
determines pitch
amplitude
vertical height of the wave from top to bottom
determines volume
saturation
colorfulness of a hue
timbre
ability to detect different sources of sounds sharing similar pitch and amplitude
