In contrast to this external projection, other synesthetes (termed “associators”) can be thought of as “non-projectors” in that their colors exist within their internal mental space. Ward and colleagues further divide this category into two: “surface-projectors” experience color projected onto the written type-face (or more generally, onto the inducing stimulus whatever that might be), and “space-projectors” project color onto some other externalized near-space. Some grapheme-color synesthetes report that their colors are experienced outside their own body space, projected into the world, and these are termed “projector” synesthetes. The projector/associator distinction was first phrased (by Dixon et al., 2004) in terms of grapheme-color synesthesia, in which colors are triggered by letters and/or digits. ![]() “associator” distinction-might fall out naturally from another, independent psychological quality. In this opinion piece I ask whether this particular difference-known as the “projector” vs. Some experience their synesthetic percepts as being similar in quality to a real-world perceptions (e.g., synesthetic colors might be projected onto external objects and be difficult to dissociate from real-world colors) while other synesthetes experience less “veridical” percepts (see below). Second, synesthetes can differ on the quality of their synesthetic perceptions even within a given variant. First, the condition is widely heterogeneous in that 60–150 different manifestations of synesthesia have been identified (e.g., auditory stimuli might trigger colors, shapes, flavors and so on Cytowic and Eagleman, 2009). Synesthetes are manifestly different to the general population, but can also be different to each other. For people with synesthesia, sensations in two modalities are experienced when only one is stimulated (e.g., auditory stimuli might trigger colors and sounds).
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