Meditators Are Not Just Doing Nothing
Alison Motluk has an interesting piece in New Scientist on how meditation does more than just make you feel good. It actually helps you perform better, and even alters the structure of the brain.
Of course, it has been known for a while that regular meditative practice confers mental and bodily benefits in good measure. Now, it seems, a daily dose can actually increase the size of parts of the brain. “Many studies have reported that the brain works differently during meditation ~ brainwave patterns change and neuronal firing patterns synchronise. But whether meditation actually brings any of the restorative benefits of sleep has remained largely unexplored.”
Bruce O’Hara and colleagues at the University of Kentucky have investigated this phenomenon.
Ten volunteers were tested before and after 40 minutes of either sleep, meditation, reading or light conversation, with all subjects trying all conditions. The 40-minute nap was known to improve performance (after an hour or so to recover from grogginess). But what astonished the researchers was that meditation was the only intervention that immediately led to superior performance, despite none of the volunteers being experienced at meditation.
“Every single subject showed improvement,†said O’Hara. “Why it improves performance, we do not know.†The team is now reported to be studying experienced meditators, who spend several hours each day in practice.
In other tests, Sara Lazar at the Massachusetts General Hospital in Boston, used MRI to compare 15 meditators, with experience ranging from one to 30 years, and 15 non-meditators.
They found that meditating actually increases the thickness of the cortex in areas involved in attention and sensory processing, such as the prefrontal cortex and the right anterior insula. “You are exercising it while you meditate, and it gets bigger,†she says. The finding is in line with studies showing that accomplished musicians, athletes and linguists all have thickening in relevant areas of the cortex. It is further evidence, says Lazar, that yogis “aren’t just sitting there doing nothing”.
[Source: New Scientist]


