The power of the wandering mind : nondirective meditation in science and philosophy

Nondirective meditation is not about emptying the mind. Instead, mind wandering is seen as an important resource. Silently repeating a meditation sound helps to cultivate a free mental attitude. The activity in the brain's default mode network increases, enriching the flow of spontaneous thought.
In fifteen chapters, experts in neuroscience, medicine, psychology, philosophy, and the humanities share groundbreaking perspectives on how nondirective meditation interacts with brain and body, mind and culture.