Reading Quiz Chapter 4 Flashcards
prospagnosia
face blindness
facial recognition occurs in the
right hemisphere
bottom-up processing
begins with sensory receptors and works up to the brain’s integration of sensory information
top-up processing
information processed by higher level thinking, when we construct perceptions on our experiences & expectations
selective attention
focus of conscious awareness on a particular stimuli
perception
organizing, and interpreting sensory information
perception allows us to
recognize meaningful objects and events
sensation
sensory receptors and nervous system receive and represent stimulus energies from our environment
intentional blindness
failing it see visible objects when attention is directed elsewhere
change blindness
failing to notice changes in the environment
change deafness
unaware of change in speaker
pop-out phenomenon
stimuli that draw are attention, often are distinctly different from the rest
psychophysics
relationship between physical characteristics including intensity and our psychological experience of them
absolute threshold
minimum stimulation needed to detect a stimulus 50% of the time
signal detection theory
how and when we detect a faint stimulus amid background noise
signal detection theory depends on an individuals
experience, expectations, motivation and alertness
signal detection theory assumes
there is no single absolute threshold
subliminal
below ones absolute threshold for conscious awareness
priming
unconscious activation of certain association areas
websters law
the principle that to be perceived different two stimuli must differ by a constant percentage
difference threshold
minimum difference between two stimuli required for detection 50 percent of the time
sensory adaptation
diminished sensitivity because of a constant stimulation
transduction
conversion of one form of energy into another
transduction in sensation
transforming stimulus energies: sights, sounds, smells into neural impulses our brain can interpret
wavelength
distance from peak of light or sound wave to the peak of the next
hue
dimension of color that is determined by the wavelength of light
intensity
amount of energy in light or sound wave which we perceive as brightness or loudness
great amplitude
bright colors
small amplitude
dull colors
short wavelength
high frequency- blue colors
long wavelenght
short frequency- red colors
pupil
adjustable opening, where light enters