[rebuilder]

Calendar synesthesia sounds like a good match with mine, although for me it's very much a "mind's eye" thing, not like an image projected into my visual field. In article 2, the researchers are said to have asked their subject to recite every third month going backwards, apparently to test that it's not just a mind's eye visualization. I get similar speeds as their test subject, and do go through the months in my mental image to help with the task. However, since for me it is a mind's eye visualization, I'm not sure the test as described is very useful.

The Wikipedia article points out that in theory, all logical synesthetic combinations are possible. I suspect that if you tested broadly for any kind of synesthetic experiences, you'd find a significant portion of the population had them, maybe even the majority.

[jraph]

> for me it's very much a "mind's eye" thing, not like an image projected into my visual field

Same for me.

> In article 2, the researchers are said to have asked their subject to recite every third month going backwards, apparently to test that it's not just a mind's eye visualization

I would be terrible at this task. I don't see the whole year (week) at once. This representation would not be of any help for that. It's here when I am scheduling / planning, or when someone is saying / I'm reading a date.