Section 2: Sensation Flashcards
which one is active and which on is passive (sensation and perception )
sen = pas
percep = active
how are waves translated into sensation
stimulus is transduced (sensory coding ) and sent as a neural impulse to the brain, brain make feelers
what is bottom up ?
all senses
what is a threshold
level of energy req by a stim for it ot be perceived
what is signal detection theory
people do not always detect a signal at the same time or same way
What is difference threshold
point at which you can tell stim a is diff sim b
look at the diagram in the slides cunt
? fuck you answering for ?
what is sensory adaptation
decline in sensitiv to prolonged stimulation
rods
low light
cones
colour and bright
trichromatic theory
RGB ,
photoreceptors made to pick up these colours
not possible to have all colour recpets
diff intensity of the colour makes you see other colours
opponent process theory
colour perception depends on receptors that make antagonistic responses to make pairs of colours :
RvG
YvB
Black vs white (race war )
what are visual pathways
Axons leave from back of eyes from optic nerve which go into the thalamus
from thalamus to primary visual cortex to occipital lobe
waht is the primary ,sec, and tert visual areas
lower level tasks
colour and movement
write and math
what is perceptual expectancy
old woman young woman slides what the fuck
perceptual constancy
shit stays the same size at diff angles , color shape size ;
moncular and binocular (top down what?)
topdown , bottomup
