Research on the processes and effects of meditation is a growing subfield of neurological research. Modern scientific techniques and instruments, such as fMRI and EEG, have been used to see what happens in the body of people when they meditate, and how their bodies and brain change after meditating regularly.
Since the 1950s hundreds of studies on meditation have been conducted, though many of the early studies were flawed and thus yielded unreliable results. More recent reviews have pointed out many of these flaws with the hope of guiding current research into a more fruitful path. More reports assessed that further research needs to be directed towards the theoretical grounding and definition of meditation.