We live much of our lives in our heads, detached from the here and now – as when we recollect the past, anticipate future possibilities, lose ourselves in a daydream, a novel, or our favourite corner of science [1]: ‘what sets us apart is…a life in the mind, the ability to imagine’ [2]. For most of us, sensory imagery, which allows us to experience the sensory properties of objects in their absence, is a central element of our imaginings [3]. The realisation that ~4% of people lack visual imagery, facilitated by a term with which to describe this, aphantasia [4], while an even higher proportion, with hyperphantasia, enjoy imagery rivalling the vividness of perception, has triggered a recent surge of research.

People can perceive some visual information even if they do not pay direct attention to it.

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