Something obviously happened to him, but I don’t buy how he has interpreted it and what he’s made of it. He’s a very imaginative person - his books prior to the whole alien thing were brilliant in their genre.
And that’s all I’ll say...
When you think that Strieber claims the same thing and then consider his book "Wolfen" is the result of a download, it raises some rather frightening questions about his "visitors."
Then, of course, it may be nothing more than figments of Strieber's and Nolan's very active imaginations.;-)
Or not.
Nolan has done extensive research on the abnormal caudate putamen structures in the brains of those who have had experiences with "visitors." Such research was submitted for peer review at Stanford IIRC, though I have not seen Nolan's paper on this subject.