1) The document discusses key concepts related to consumer perception including sensation, thresholds, subliminal perception, selection, organization, and interpretation.
2) It explains that perception is the process by which individuals select, organize and interpret stimuli to form a meaningful understanding of the world.
3) Sensation is the immediate response of the senses to stimuli, while thresholds refer to the minimum levels at which stimuli can be detected either absolutely or in relation to other stimuli.