R发现冥想时他会出现一种天人合一的感觉,最近的研究显示,这种主观感觉可能是因为
A a decrease in parietal lobe activity
B an increase in activity in the prefrontal cortex
Cthe onset of dissociation and divided consciousness
D an increase in alpha and theta waves throughout the brain
我觉得是第四个