Chapter 5 - Sensation and Perception Flashcards
1
Q
sensation
A
the process of receiving stimulus energies from the external environment and transforming them into neural energy
2
Q
perception
A
the process of organizing and interpreting sensory information so that it makes sense
3
Q
bottom-up processing
A
initiated by sensory input (senses to brain), outside world’s influence on perception
4
Q
top-down processing
A
initiated by cognitive processing, internal/mental world’s influence on perception (expectations and prior understanding)
5
Q
absolute threshold
A
the minimum amount of stimulus energy an organism can detect 50 percent of the time
6
Q
difference threshold
A
how much stimulus difference is necessary for detection (just noticeable difference)
