Complex sentence: Joseph has published over 50 scientific papers on neuropsychology, after studying evidence he claims that religion, sexual perversion and aggression are all products of dysfunctions of the limbic system structures of the brain.
Split into simpler sentences: Joseph has published over 50 scientific papers on neuropsychology. He claims that religion, sexual perversion, and aggression are all products of dysfunctions of the limbic structures of the brain.