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Well, vision is 2D * 2 (two retinae) but visual perception is 3D, auditory signal is 1D * 2 (two ears), but its perception is 3D. The 3D perception in these senses are results of analysis of the lower dimensional sensory signal combined with various other internal states. (Internal states can integrate information over time to produce better percepts.) ...


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It's not 2D: Tactile perception can very simply understand a ring around your finger. If you projected the skin of your body onto a 2D plane there would be a way to represent this sensation, but only as an irregular shape. So you need a third dimension to cognitively process this sensation. But Phantom pain tells us the brain doesn't always register tactile ...


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Earwax, also called cerumen, is slightly acidic (1), with a pH of about 6, and acidic foods or substances taste sour. The composition of earwax, upon which its taste depends, is related to its functions. Earwax aids in cleaning and lubrication of the ear canal and has an antimicrobial effect. The antimicrobial effect is in part attributed to its acidity, ...



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