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How much of what you experience is objective reality — and how much is your brain's highly edited version of it? This lesson from Section 5.1 of Psychology 2e breaks down the crucial difference between sensation (the physical detection of stimuli) and perception (the psychological interpretation of those stimuli). From transduction to inattentional blindness, you'll discover just how many filters stand between the world and your conscious experience of it. In this video: • Sensation vs. perception: why one is biological and the other is psychological, illustrated with the cinnamon roll smell example • Transduction explained: how light, sound, and other stimulus energy get converted into electrical action potentials the brain can read • Absolute threshold and difference threshold: detecting a candle 30 miles away and why a phone screen vanishes in a bright arena (Weber's Law) • Subliminal messages: what the research actually says about stimuli below the threshold for conscious awareness • Bottom-up vs. top-down processing: a dropped tray in a restaurant versus hunting for a yellow key fob • Sensory adaptation and inattentional blindness: the flashing hotel window light and the famous 'invisible gorilla' experiment • How culture, personality, and motivation shape perception — from the Müller-Lyer illusion and carpentered worlds to thrill-seekers preferring sour flavors #OpenStax #Psychology #Perception #Neuroscience OpenStax Content adapted from "OpenStax Psychology 2e", by OpenStax licensed under CC BY 4.0. Content based on Web Version: Apr 23, 2026. Read the textbook online https://openstax.org/details/books/psychology-2e Music first girl talking to me. by ikkun (ex. Barradeen) | https://soundcloud.com/ikkunwastaken Royalty Free Music by https://www.free-stock-music.com Creative Commons / Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) https://creativecommons.org/licenses/by-sa/3.0/deed.en_US
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Answer each question using what you learned in the video lesson. Questions progress from basic recall to applied reasoning — read each one carefully before responding.
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