1. A non-transitory computer readable program storage unit encoded with instructions that, when executed by a computer, perform a method for confirming an occurrence of a brain state change, comprising: obtaining data relating to at least a portion of a heart beat complex shape from a patient; identifying an occurrence of a brain state change based upon a first body parameter, wherein said first body parameter is not a parameter relating to at least a portion of said first heart beat complex shape; comparing said at least said portion of said heart beat complex shape with a corresponding portion of a first reference heart beat complex shape template of said patient; and, confirming an occurrence of a brain state change based upon a determination that said heart beat complex shape fails to match said first reference heart beat complex shape template; wherein said comparing and said confirming are performed in response to said identifying, to validate said identifying.