Aphantasia is the inability to see with your mind’s eye. And its discovery has made scientists ask a surprising question: What is the mind’s eye even for? (First published in 2022.)

Guests: Alice Coles, artist; Adam Zeman, cognitive neurologist at the University of Exeter Medical School; Joel Pearson, professor of neuroscience at the University of New South Wales; Emily Holmes, professor of psychology at Uppsala University

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