An investigation in automatic analysis of the galvanic skin response
Edwards, Robert J
Master of Science
As an individual thinks, makes simple Or complicated judgements and experiences emotions, his physiology undergoes subtle or profound changes reflecting the close relationships between physiological and psychological processes. Many of the physiological processes manifest themselves as electrical activity in the human body and are conveniently measured by present day electronic techniques. Studies a human behavior are making increasing use of changes in these bioelectric potentials to indicate changes psychological processes. Therefore, present day investigators find themselves studying many and various aperiodic waveforms of the bioelectric potentials. The large amount of data recorded as bioelectric potentials presents a complex problem in analyzing and abstracting the significant changes that may indicate changes in psychological processes. In this investigation, an automatic analysis system is, developed for one of the frequently used bioelectric potentials, the Galvanic Skin Reflex (GSR). The analysis process is orientated toward relating parameters of Galvanic Skin Reflex activity to an individual's degree of neurophysiological arousal and to measures of group interactions among several individuals.. The analysis process was carried out with an analog computer and was completely automatic. Use a the analog computer gave a versatile and convenient method for experimenting with the data to determine what parameters of the GSR activity are significant in reflecting psychological changes, what parameters are suitable for automatic analysis, and finally to formulate the requirements for building a GSR analyzer.