Aphantasia reimagined

Abstract

How is it that individuals who deny experiencing visual imagery nonetheless perform normally on tasks which seem to require it? This puzzle of aphantasia has perplexed philosophers and scientists since the late nineteenth century. Contemporary responses include: (i) idiosyncratic reporting, (ii) faulty introspection, (iii) unconscious imagery, and (iv) complete lack of imagery combined with the use of alternative strategies. None offers a satisfying explanation of the full range of first‐person, behavioural and physiological data. Here, I diagnose the puzzle of aphantasia as arising from the mistaken assumption that variation in imagery is well‐captured by a single ‘vividness’ scale. Breaking with this assumption, I defend an alternative account which elegantly accommodates all the data. Crucial to this account is a fundamental distinction between visual‐object and spatial imagery. Armed with this distinction, I argue that subjective reports and objective measures only testify to the absence of visual‐object imagery, whereas imagery task performance is explained by preserved spatial imagery which goes unreported on standard ‘vividness’ questionnaires. More generally, I propose that aphantasia be thought of on analogy with agnosia, as a generic label for a range of imagery deficits with corresponding sparing.

Authors

• Ian Phillips1

Aphantasia reimagined

Abstract

How is it that individuals who deny experiencing visual imagery nonetheless perform normally on tasks which seem to require it? This puzzle of aphantasia has perplexed philosophers and scientists since the late nineteenth century. Contemporary responses include: (i) idiosyncratic reporting, (ii) faulty introspection, (iii) unconscious imagery, and (iv) complete lack of imagery combined with the use of alternative strategies. None offers a satisfying explanation of the full range of first‐person, behavioural and physiological data. Here, I diagnose the puzzle of aphantasia as arising from the mistaken assumption that variation in imagery is well‐captured by a single ‘vividness’ scale. Breaking with this assumption, I defend an alternative account which elegantly accommodates all the data. Crucial to this account is a fundamental distinction between visual‐object and spatial imagery. Armed with this distinction, I argue that subjective reports and objective measures only testify to the absence of visual‐object imagery, whereas imagery task performance is explained by preserved spatial imagery which goes unreported on standard ‘vividness’ questionnaires. More generally, I propose that aphantasia be thought of on analogy with agnosia, as a generic label for a range of imagery deficits with corresponding sparing.

Authors

• Ian Phillips1