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  • BBC Science Focus Magazine

    THE EXPLAINER

    Feb 16, 2022 3 minutes
    by DR CLAIRE ASHER

    SYNAESTHESIA

    WHAT IS SYNAESTHESIA?

    Synaesthesia is a perceptual phenomenon where stimulation of one sense triggers experiences in another sense. For example, a synaesthete might see colours when music plays, or taste flavours when they speak different words. The word synaesthesia originates from the Greek words ‘syn’ for union and ‘aesthesis’ for sensation, literally translating to ‘a union of the senses’.

    There are over 70 types of synaesthesia, which cause associations between different types of sensory

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