Determination of a Behavioural Transfer Function by Frequency Analysis

Abstract

TRANSFER functions are used by engineers as a means of describing, in a single equation, the relationship between the input and output of a system. Frequency analysis is a classic method of determining transfer functions in physical systems, and has also been used for quasi-behavioural systems, such as those controlling optokinetic responses¹ and the pupillary light reflex². In the behavioural context, a transfer function describes the stimulus–response relationship in all possible stimulus conditions. It also makes it possible to compare biological and physical systems directly. In other words, it offers an explanation of behaviour that is independent of the “hardware” involved. In this preliminary report, frequency analysis is applied to behaviour, with the eventual aim of accounting for motivational phenomena rigorously and quantitatively.