| Spatial locations | Interferences |
---|
| External | Internal | Gaze centred | Posture | Sound source | Unaffected |
---|
S1 | | x | | | | x |
S2 | | x | | | | x |
S3 | | x | | | | x |
S4 | | | | | x | |
S5 | x | | | | x | |
S6 | | x | | | | x |
S7 | | x | | x | x | |
S8 | x | | | | x | |
S9 | | x | | x | x | |
S10 | | x | x | | x | |
S11 | | x | | | | x |
- Most subjects described the tone-induced synesthetic colours occurring internally, while a few experienced them externally. Apart from this polarity, one subject described the synesthetic colours occurring in a gaze-centred manner. Furthermore, for many subjects, the spatial locations varied depending on their posture and/or the sound source. Many subjects also reported their synesthetic colours being unaffected by interfering aspects.