Signal processing of the galvanic skin response to quantitatively assess aspects of the educational process
Theodoros Pierratos, Hariton M. Polatoglou · Annals of General Psychiatry · 2008
BackgroundGalvanic skin response has a long history and is regularly employed to objectively assess along with other psychophysiological responses the state of arousal, emotions and as well as cognitive activity [1].It is a relatively simple and not invasive method and can be applied with little disturbance to subjects.With the advent of electronics it is possible to continuously measure the galvanic skin response, store it in a computer and apply signal processing to extract valuable information [2],[3].At the same time the computer can be utilized to deliver the stimuli to the subjects thus allowing flexibility, uniformity, a variety of stimuli and combinations of them.In education most of the research is done using subjective tools and many times not concurrently, to assess the various pertinent aspects, like interest, attention, etc.The aim of the present work is to utilize the galvanic skin response of students both at high school and at the university using various stimuli related to the education processes, do signal processing to the resulted time series and device indicators that will describe the objective response of the students.