The invention provides methods of diagnosing or determining a cause of an autoimmune encephalitis or an epilepsy in a subject and of diagnosing a tumor in a subject, comprising the step of testing a biological sample of the subject for an antibody to LGI1. Each locking device uses spring biased actuating rods to simultaneously lock two locking rods to the movable platen in an always on arrangement. The method also includes examining, after transmission, the sequence number associated with each packet to determine if one or more packets from the code word is missing. The DA converter generates a plurality of analog voltage signals corresponding to the 3\xd7n digital signals using a plurality of gray scale voltages. The treatments are typically of a very short duration.