1. A system for determining a measure of response of a remotely located audience to a target stimulus comprising: at least one biologically based sensor located in a remote station operable to measure at least one unconscious neurologically based brain response for each member of an audience; a computer system operable to receive a first set of data representative of the at least one unconscious neurologically based brain response for each audience member from a plurality of locations and audiences, wherein the computer system further comprises a remote memory capable of receiving and storing the first set of data, wherein the system is capable of receiving and storing a plurality of target stimuli, wherein the system is capable of exposing each audience member to a presentation of the target stimulus, and wherein the system is capable of obtaining demographic information from each member of each audience in each location.