Thank you, also to bookofjoe for the answers. I had found the NMDA receptor connection, but so far not any mention of long term (four to six months) of alcohol

Thank you, also to bookofjoe for the answers. I had found the NMDA receptor connection, but so far not any mention of long term (four to six months) of alcohol insensitivity after ketamine use. If there is one, I'm unable to find it. Some new information in those Wikipedia links, about other neuroreceptors.