A system for detecting and recording head orientations of a person includes: a first sensor device capable of providing sensor data regarding a head orientation of a person in a three-dimensional space； a data acquisition system configured for storing and outputting the sensor data from the first sensor device； and a processor configured for processing the sensor data from the data acquisition system, outputting a first signal representing the head orientation, and generating an image for presentation by a graphical display； wherein the image comprises: a first reference indicator； an orientation indicator, wherein a position of the orientation indicator in the image is determined based on the first signal from the processor, and a feedback indicator when a first condition is met.
