What is perception (ch.1)

Question 1

bottom up processing

Answer 1

using sensory info around you to come to a conclusion

Question 2

top down processing

Answer 2

using existing knowledge to interpret sensory info

Question 3

psychophysical approach

Answer 3

series of theories about the relationship between the physical and mental processing. how our sensory systems function

Question 4

physiological approach

Answer 4

relationship between a stimulus and the neural mechanisms that process them

Question 5

detection

Answer 5

method for detecting thresholds

Question 6

method of limits (absolute threshold)

Answer 6

present stimuli in increments going up or down. find crossover point

Question 7

method of adjustment (absolute threshold)

Answer 7

playing varying intensities until it can barely be noticed

Question 8

method of constant stimuli (absolute threshold)

Answer 8

present stimuli in random intensities until it is noticed 50% of the time

Question 9

difference threshold

Answer 9

whether or not the difference between 2 stimuli are noticed

Question 10

webers law

Answer 10

each stimulus has a certain amount of change needed before it is noticed. Ie. electric shock: 1%, light 8%

Question 11

subliminal perception

Answer 11

below threshold but still picked up by receptors

Question 12

stevens power law

Answer 12

magnitude estimation

-magnitude of a stimulation is increased or decreased but is perceived by us as a fraction of the real change

Question 13

Responsive compression

Answer 13

to perceive light as being changed it needs to be 8-9 times brighter. we compress it to not see as big of a change

Question 14

responsive expansion

Answer 14

1% change in electric shock is perceived as a 10% increase