Age-Related Changes In Gray Matter Volume, Attentional Performance Associated With The Practice Of Zen Meditation
Zen
meditation, a Buddhist practice centered on attentional and postural
self-regulation, has been speculated to bring about beneficial
long-term effects for the individual, ranging from stress reduction to
improvement of cognitive function.
In this study, we examined how the
regular practice of meditation may affect the normal age-related
decline of cerebral gray matter volume and attentional performance
observed in healthy individuals.
Voxel-based morphometry (VBM), a recent technique to measure gray
matter changes from MRI brain scans, and a computerized task of
sustained attention were employed in 13 regular practitioners of Zen
meditation and 13 control subjects matched for age and education level
who never practiced meditation.
While both total gray matter volume and
attentional performance displayed the expected decrease with age in
control subjects, meditators did not show such a trend.
Furthermore,
the difference in volumetric decline between meditators and controls
was most prominent in the putamen, a basal ganglia structure that has
been implicated in attentional processing in general and attention
deficit and hyperactivity disorder (ADHD) in particular.
While results
will need to be confirmed by a longitudinal study on a larger sample,
these findings suggest that the regular practice of meditation may have
neuroprotective effects and reduce the cognitive decline associated
with normal aging.
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