RECORDING AND ANALYSING EMOTIONS FROM DATA OBTAINED FROM EYETRACKING

Abstract

DOI: https://doi.org/10.46296/ig.v8i15.0230

This study analyzes emotional responses to visual stimuli using the eyetracking device, which tracks eye movements and measures visual attention. Emotions influence the perception of visual information, generating different attention patterns to positive and negative stimuli. The general objective of this study is to record and analyze emotions from data obtained through eyetracking. The methodology is based on data collection, analysis and processing. A group of 40 participants was selected, who were exposed to different visual stimuli, including both positive and negative images. Five key variables were measured: Total Fixation Duration (TFD), Average Fixation Duration (ADF), Total Number of Fixations (TNF), Number of Saccades (NS) and Average Pupil Diameter during Fixations (APD). The results indicated that negative images generated a 15.3% longer average fixation duration (TPD: 175.33 ms) compared to positive images (TPD: 168.66 ms). Regarding Total Fixation Duration (TFD), positive (117.61 ms) and negative (116.07 ms) images presented comparable means, with a difference of 1.3%. The analysis of Average Pupil Diameter during Fixations (APD) revealed that positive images generated an average pupil diameter of 3.10 mm, 10.7% larger than negative images (2.80 mm). These findings support the theory that, if significant differences exist, negative emotions provoke more intense and prolonged attention, while positive emotions, although attractive, do not generate the same need for evaluation in many cases; showing that there are differences in the aforementioned variables when presenting positive and negative stimuli. This study contributes to the understanding of the emotional process in response to visual stimuli and provides a basis for future research on the relationship between emotions and visual perception.

Keywords: Eyetracking, emotions, variables, pupil diameter, visual stimuli.