The Beatles Revolver album came out in the summer of 1966 and the first song they recorded on it Tomorrow Never Knows which many consider to be one of the first true psychedelic songs,was recorded in April 1966 and The Doors and Velvet Underground's first albums didn't come out until 1967 so it's very obvious and clear who was more influenced by who. And The Beatles recorded Penny Lane and Strawberry Fields in late 1966 and A Day In The Life was recorded in January 1967 for Sgt.Pepper.