The document discusses a study on the effects of meditation on the brain. Brain scans of participants before and after an 8-week meditation training program showed increased gray matter in the hippocampus, temporal lobe, and frontal cortex regions of the brain. These regions are associated with memory, learning, emotional regulation, and stress response. The results suggest that meditative practices can induce measurable neuroplastic changes in the brain and may have benefits for reducing stress and improving cognitive functions.