Involuntary behaviors contain important information about the decision-making process in the brain

Results from a research project show that involuntary behaviors contain important information about the decision-making process in the brain, and on the other hand, it shows that the temporal pattern of information display can well change the human decision-making process.

"Accurate understanding of the decision-making process is not only the path to recognizing the brain as the most complex substance in the world, but it is also the most important way to identify and treat behavioral disorders" Says Dr. Reza Ebrahimpour, head of the computer engineering faculty of Shahid Rajaee University, and leader of "Accuracy, Speed and Certainty in perceptual decision making".

Ebrahimpour notes that in this research, in order to better understand the decision-making process in the brain, they first investigate the determinants of accuracy, speed, and certainty in human perceptual decisions using simple psychophysics experiments with simple and controlled stimuli and paradigms. He adds:" Their presentation in the brain and involuntary and rapid eye movements were also studied by the brain signal recording and eye-tracking device."

The findings suggest that accuracy, speed, and certainty of decision are not only visible in brain signals, but also in involuntary behaviors of human subjects, including pupil diameter and rapid eye movements; thus, we will be able to derive the level of confidence in the correctness of our decision, which is a mental factor and subjective, from the characteristics of their eyes. It is also shown that having delays between the information sent to the subject for perceptual decision making changes the parameters of the decision model.