PS101 Chapter Notes - Chapter 4: Detection Theory, Olfactory Bulb, Parietal Lobe
Document Summary
Sensation is the process through which the sense detect visual, auditory and other sensory stimuli and transmit them to the brain. Perception is the process by which sensory information is actively organized and interpreted by the brain. Difference between not being able to perceive a stimulus and being able to just barely perceive it the smallest amount of stimulation necessary for you to be able to detect. The minimum amount of sensory stimulation that can be detected 50% of the time. The s(cid:373)allest i(cid:374)(cid:272)(cid:396)ease o(cid:396) de(cid:272)(cid:396)ease i(cid:374) a ph(cid:455)si(cid:272)al sti(cid:373)ulus that is (cid:396)e(cid:395)ui(cid:396)ed to p(cid:396)odu(cid:272)e the (cid:862)just noticeable difference(cid:863) (jnb) in sensation that is detectable 50% of the time. Amount of increase needed to make a difference. If you are carrying 2kg, 1 additional gram wont make a difference. If you carry only 20 grams, 1 gram will make a difference. Used in radiology, reading mri, pet scan etc.
