PITTSBURGH (AP) — A neurologist says a gunman who massacred 11 worshippers at a Pittsburgh synagogue has schizophrenia and epilepsy. Dr. Siddhartha Nadkarni testified Wednesday as a defense expert at Robert Bowers’ federal death penalty trial. Bowers has already been convicted in the deadliest antisemitic attack in U.S. history. Jurors must now decide whether Bowers should be sentenced to death or to life in prison without parole. The defense is trying to show the gunman’s ability to form intent to kill was impaired by mental illness. Prosecutors say Bowers was motivated to kill by his hatred of Jewish people.