UCLA studies: using diffusion tensor imaging (DTI), a relatively new imaging mode that provides insights into the structural connectivity of the brain, researchers found differences between the brain of people who meditate and controls. The subjects reported a variety of styles of meditation. Meditation appears to be a powerful mental exercise with the potential to change the physical structure of the brain at large. People who meditate have stronger connections between brain regions and show less age-related brain atrophy. Stronger connections influence the ability to rapidly relay electrical signals in the brain. Significantly, these effects are evident throughout the entire brain, not just in specific areas. Studies showed increased structural connectivity in meditators throughout the brain’s pathways. The greatest differences were seen within the corticospinal tract (axons that connect cerebral cortex and spinal cord), the superior longitudinal fasciculus (long bundles of neurons connecting front and back of the cerebrum), and the uncinate fasciculus (white matter that connects parts of the limbic system, such as the hippocampus and amygdala, with the frontal cortex).