Human Memory

I've got a well developed visual type of thinking (sometimes referred to as daydreaming). And I also can multiply 2 and 3 digit numbers by charting them in my head (multiplying 4 digits is much harder for me). There is a page on the Internet that gives account of people with exceptional abilities to remember and multiply huge numbers (like 100 digits, crazy staff): "Mental arithmetic".

What caught my eye is the description of the education effect on these abilities: with learning they diminished. And in fact for me, visually remembering numbers is harder than remembering associated shapes. So, in order to faster memorize the PI constant for example to a certain number of digits, I do something like this:

I have also observed that the more sensory information is available (scent, sound, visuals), the stronger the memory: so called synesthesia. Some people have spontaneous synesthesia, like this Russian journalist Solomon Shereshevsky.

As I said above I have daydreaming. That means I think in very vivid images. Also I can remember tastes, scents, touches, temperature sensations.