An animal rewarding scheme with adaptive methods for measuring sensory, or cognitive, or decision biases in behavioural experiments

Behavioural experiments in animals, in particular psychophysics measures of sensory processing, have been used to demonstrate similar illusory percepts in animals as in humans. These measures suffer from methodological shortcomings that can be argued to create unnecessary biases in the results or interpretation difficulties. In this paper, a method is presented that allows to measure the subjective percept of the tested subject. It combines psychophysics adaptive algorithms with a modified rewarding scheme. It is further argued that this method permits measures of any type of perceptual, cognitive, or response biases that can be of interest to investigate