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Department of Cognitive Science

FRP System Details

An FRP is the average brain response to just one area of a larger visual scene, such as the eyes in a face, or a word written in a sentence. We measure FRPs using a method developed by our collaborators in Salzburg. In this system, and an an eye-tracker sends codes to the ERP system when the eyes fixate on a pre-defined area of a visual scene for more than 35 ms. We use these codes to calculate the average brain response that follows fixations to one or more areas of a visual scene. For example, we can calculate the average brain response to the eyes in a face and the average brain response to the mouth in the same face. This is very useful technique if you want to measure brain responses to stimuli presented in real-world situations such as words within sentences, eyes in faces, or (perhaps) musical notes in scores.