i had a friend while growing up that was blind and she had a very good sence of spacial relationships and object size and shape. it would not be what sighted people would consider visualization. but she could easily [imagine things she had held and felt.
close your eyes and imagine a 3 dimensional object in black and white. imagine it with a specific texture and weight and hardness. that i think is what it is like. its tough for a sighted person to do without seeing it in our minds and probably equally tough for a blind person for the opposite.
the blind especially those trained to read in braille have an extra sensitive sense of touch. my friend (lisa) had a watch that she could flip the bezel up on and feel the hands and even tell seconds. the second hand would barely register to my finger.
