Gustav Theodor Fechner coined the word ‘Psychophysics’ to define research which aims to describe the relation of physical stimuli and the contents of consciousness such as sensations. This was only the beginning of the field of science which produced several eminent scientists. Psychophysics quantifies perception by examining the relation between stimuli and the responses. With extensive research work carried out for several decades now, Psychophysicists have refined the methods and techniques and deal with problems in learning, memory, attitude measurement and social psychology. Psychophysicists are extensively acquainted with several branches of science such as biology, mathematics, psychology, physics and even computational science. They contribute a great deal in understanding the very presence of reason in the human mind and dig deeper in the amazing dimensions of the human mind. They apply these methods to study the human perceptual system, detect and define signal and successfully use it to study digital signal processing. They even extended the applications to the field of neurology helping in understanding different neurological disorders. Discover this space for the list of famous comparative psychologists with their biographies that include trivia and interesting facts about them and also trace their timeline and life history.