Meditation visibly changes your brainwaves

Over the past fifty years, practices such as yoga and meditation have jumped from the counterculture to the mainstream, with many people praising their stress-relieving and wellbeing effects. They’ve also attracted the attention of neuroscientists who are busy studying how exactly these activities affect our brains and the impact on our behaviour. In a recent experiment, researchers studied the brainwaves of expert meditators while they slept after two sessions of intensive meditation training, and compared them with recordings from the same people before training. They found that after the sessions they showed an increase in slow brainwaves and so-called sleep spindles, brief periods of waxing and waning faster oscillations, early in the night. Similar patterns have been observed during sleep after other kinds of training, and are thought to reflect…


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