Such encounters had seen some limited attention from academic figures (R. Leo Sprinkle perhaps being the earliest, in the 1960s).
He is also known for his involvement with Stan Romanek, a well-known alien abductee, whom he hypnotised to retrieve lost memories of his supposed abductions.
Appearing on ABC Primetime in 2009, Romanek underwent hypnosis by Dr R. Leo Sprinkle, a psychologist who specialized in alien abduction cases.
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