 The connection between synesthesia and mental imagery has long been acknowledged: Synesthetes across the board have more vivid mental imagery than non-synesthetes (Barnett and Newell 2008, Price 2009, Amsel et al. 2017) And this difference is modality specific – so lexical gustatory synesthesia subjects have more vivid gustatory mental imagery (but not necessarily more vivid mental imagery in the, say, auditory sense modality (Spiller et al. 2015). Further, synesthesia is very rare among aphantasia subjects (who report no or hardly any mental imagery) and relatively frequent among hyperphantasia subjects (who report very vivid mental imagery) (Zeman et al. 2020). While there is significant variability between the experiences synesthetes report (see Dixon et al. 2004) and some, but not all of these experiences are reported to be very similar to mental imagery, all instances of synesthesia will count as mental imagery understood as perceptual representation formed in response to early cortical processing that is not triggered directly by sensory input (Nanay 2021a). This gives a unified account of synesthesia and can also explain non-standard (but rigorously demonstrated) cases of synesthetic experiences triggered not by sensory input but by imagining sensory input (Spiller and Jansari 2008).