In a study on meditation noted that participation in a MBSR meditation program was associated with changes in the concentration of gray matter in brain regions involved in learning and memory , emotional regulation , self-referential processing , and perspective taking . The researcher who has helped to formalize the concept of Mindfulness is Jon Kabat-Zinn . This scientist at the University of Massachusetts gave its name to stress reduction program based on the Mindfulness ( MSBR ) which has given rise to various studies and has served to define the practice . This consists in a technique called Mindfulness and derived from Buddhist Vipassana meditation. Kabat- Zinn defines it as ” moment to moment awareness to our thoughts, feelings, bodily sensations, and surrounding environment, without judgment and with an attitude of acceptance.”
Under normal conditions the mind is filled with thoughts, memories and images that come and go without stopping either from the past or anticipating a future situation . This evolution of ideas in the mind occurs almost automatically in most people without the intervention of the attention of the thinking subject . This automatic thought state makes that we are not often aware of what we are doing . One example is when we often drive back home and suddenly arrive almost without realizing where we came for. The problem is that thoughts take our attention , and we do not realize where we are or what is around us.
 “Mindfulness practice leads to increases in regional brain gray matter density”.- Britta K. Hölzel,*,a,b James Carmody,c Mark Vangel,a Christina Congleton,a Sita M. Yerramsetti,a Tim Gard,a,b andSara W. Lazara