The study suggests that the meditation allows practitioners to access a heightened state of visual-spatial awareness that lasts for a limited period of time.
A team of researchers, led by psychologist Maria Kozhevnikov of George Mason University, investigated the effects of different styles of Buddhist meditation on visuospatial skills.
During DY meditation, the practitioner focuses intently on an image of deity and his or her entourage. This requires coming up with an immensely detailed, three-dimensional image of the deity, and also focusing on the deity's emotions and environment.
On the other hand, practitioners of OP meditation believe that pure awareness cannot be achieved by focusing on a specific image and therefore, they attempt to evenly distribute their attention while meditating, without dwelling on or analysing any experiences, images, or thoughts that may arise.
In these experiments, experienced DY or OP meditation practitioners along with nonmeditators participated in two types of visuospatial tasks, testing mental rotation abilities (e.g., being able to mentally rotate a 3-D structure) and visual memory (e.g., being shown an image, retaining it in memory and then having to identify it among a number of other, related images).
All of the participants completed the tasks, meditators meditated for 20 minutes, while others rested or performed non-meditative acitivities, and then completed a second round of the tasks.
The results revealed that all of the participants performed similarly on the initial set of tests, suggesting that meditation does not result in an overall, long-lasting improvement of visuospatial abilities.
However, following the meditation period, practitioners of the DY style of meditation showed a dramatic improvement on both the mental rotation task and the visual memory task compared to OP practitioners and controls.
These results indicate that DY meditation allows practitioners to access greater levels of visuospatial memory resources, compared to when they are not meditating.
According to researchers, this finding "has many implications for therapy, treatment of memory loss, and mental training." Although, they conclude, future studies will need to examine if these results are specific to DY meditation, or if these effects can also occur using other visual meditation techniques.
The study is published in Psychological Science, a journal of the Association for Psychological Science.
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