Below are excellent links to overviews of the available Near Death Experiences (NDEs) secular academic research, summation of case histories, cautions of interpretation of cases, the New Age/demonic potentials, the authentic experiences God may well have provided some, and Christian perspectives (academic and theological). These are excellent overviews on this subject and are well worth reading.
Hank Hanegraaff's organization, Christian Research Institute, has some fascinating things to say about near death experiences and research related to them:
Near Death Experience Part One:
http://www.equip.org/articles/the-near- ... -part-one/
Near Death Experience Part Two:
http://www.equip.org/articles/the-near- ... -part-two/
Related Articles:
http://www.equip.org/category/near-death-experience/