On the Variability of a Simple Sensorimotor Reaction

Abstract

To date, a wide variety of distributions of the simple sensorimotor reaction (SSR) has been studied. In this work, we also studied the distributions of this phenomenon, taking into account the fact that SSR has a constant and a variable part. The distribution of the constant component of the SSR had a normal character, while the distribution of the variable components had a more complex form. Analysis of the distribution of SSR in one subject for 36 minutes showed that both the constant and variable parts of SSR had a multi-peak distribution and a long “tail” in the range of large values. The study of the behavior of the SSR parameters over a relatively long period of time, along with an increase in the constant part of the SSR, revealed periodic and abrupt changes in both the constant component and the variable components. It is assumed that such differences are associated with a change in the structure of the transmission of excitation from sensors to the motor cortex over time.