"The beauty of one of Japan's most popular Zen gardens has long eluded explanation. Now neuroscientists have found that its minimalist design suggests a pleasing picture to our subconcious. The 500-year-old Ryoanji Temple garden in Kyoto contains five outcroppings of rocks and moss on a rectangle of raked gravel. Using symmetry calculations the researchers have discovered that the objects imply an image of a tree in the empty space between them that we detect, without being aware of doing so"
Neuroscience unlocks secrets of Zen garden