句子主干是the research also found poetry increased activity in the right hemisphere of the brain,in particular是插入语,“特别,尤其”
an area concerned with "autobiographical memory"是the right hemisphere of the brain的同位语,用来修饰后者
which helped the reader to reflect on and reevaluate their own experiences in light of what they had read是非限制性定语从句,用来修饰the right hemisphere of the brain