Gestalt theory states that the brain perceives whole forms or patterns rather than individual parts. There are several Gestalt laws including figure-ground, closure, similarity, and proximity. Semiotics is the study of signs and symbols and how they influence interpretation. Signs have a signifier, signified, and together they form a sign. There are three types of signs: iconic, indexical, and symbolic. Advertisements often use metonymic codes by creating associations between products and concepts. Analogical codes create mental comparisons, while displaced codes transfer meaning between symbols.
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