PSYC 2000 Chapter : Chapter 3 Notes
Document Summary
Thresholds: absolute threshold: minimum (lowest level of) stimulation needed to detect a particular stimulus 50% of the time, difference threshold: minimum difference between two stimuli required for detection 50% of the time, also called just noticeable difference (jnd). In humans, difference thresholds (experience as jnd) increase in proportion to the size of the stimulus: two stimuli must differ by a constant minimum percentage (rather than a constant amount), to be perceived as different. fatigue. Subliminal threshold psychological state: person"s experience, expectations, motivation, level of. Subliminal stimuli those stimuli just strong enough for our sensory receptors to: subliminal perception stimuli acting on our unconscious mind to influence. The lens: nearsightedness: nearby objects are seen more clearly than distant objects, farsightedness: faraway objects are seen more clearly. Retina: contains photoreceptor rods & cones plus layers of other neurons, bipolar cells receive messages from photoreceptors and transmit them to ganglion cells that carry messages through optic nerve to brain.
