I always think of numbers/alphabet/calendar as having a particular spatial form. Is this synaesthesia?
Some people might think of numbers having a particular arrangement in space. For example, the numbers 1 to 10 may be mentally arranged on a vertical line, which turns right at 11 and then makes a 30 degree upward turn at number 50, and so on. There have been similar reports for alphabet, days and months (e.g. Cytowic, 1989; Galton, 1880). Some people consider this synaesthesia, while others consider it simply something that sometimes co-occurs with synaesthesia.
