Passage by Connie Willis features Dr. Joanna Lander is a cognitive psychologist at Mercy Hospital. The focus of her research is the near-death experience (NDE). She interviews people who have coded and were resuscitated to try to to identify the common elements and to see if she can find out what causes the NDE and the purpose it serves in the dying brain. She meets up with Dr. Richard Wright, who is also studying NDEs, using a drug that simulates the near-death experience. When their volunteer list dwindles and the project is in danger of losing its funding, Joanna goes under the drug herself and embarks on a series of strange journeys as she tries to piece together the clues her experiences provide.

I love Connie Willis' books, I have not read one I did not like. It is hard to put her books down once you start reading it.