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What happens in a mind that can't 'see' mental images
Neuroscience research into people with aphantasia, who don’t experience mental imagery, is revealing how imagination works and demonstrating the sweeping variety in our subjective experiences.
Early studies have suggested that differences in the connections between brain regions involved in vision, memory and decision-making could explain variations in people’s ability to form mental images. The group designed a few tests — one probing the mind’s ability to hold a visual image, and another measuring sweat and pupil responses to mental pictures — to confirm aphantasia’s existence. At left, video stills from Aphantasia – Raft of the Medusa(2017) by Andrew Bracey, who uses “something that exists already, in order to create something new.” At right, Melissa English Campbell, who has hyperphantasia, weaves geometric patterns into linen cloth, such as in Honey(2014), by “spend[ing] hours over days or months composing the whole piece in my mind.”
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