Information-theoretic characterization of eye-tracking signals with relation to cognitive tasks
| Autor: | F R Iaconis, Gustavo Gasaneo, J. A. Del Punta, A. A. Jimenez Gandica, Claudio Delrieux |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Elementary cognitive task
Eye Movements Computer science Entropy Trail Making Test General Physics and Astronomy Machine learning computer.software_genre 01 natural sciences 010305 fluids & plasmas symbols.namesake Cognition 0103 physical sciences Humans Eye-Tracking Technology 010306 general physics Fisher information Mathematical Physics business.industry Applied Mathematics Psychopedagogy Neuropsychology Statistical and Nonlinear Physics symbols Probability distribution Eye tracking Artificial intelligence business computer Neurocognitive |
| Zdroj: | Chaos: An Interdisciplinary Journal of Nonlinear Science. 31:033107 |
| ISSN: | 1089-7682 1054-1500 |
| DOI: | 10.1063/5.0042104 |
| Popis: | Eye tracking is being increasingly used as a more powerful diagnosis instrument when compared with traditional pen-and-paper tests in psychopedagogy and psychology. This technology may significantly improve neurocognitive assessments in gathering indirect latent information about the subjects' performance. However, the meaning and implications of these data are far from being fully understood. In this work, we present a comprehensive study of eye tracking time series in terms of statistical complexity measures. We registered the eye tracking movements of several subjects solving the two parts of the commonly applied Trail Making Test (TMT-A and TMT-B) and studied their Shannon entropy, disequilibrium, statistical complexity, and Fisher information with respect to three different probability distributions. The results show that these quantifiers reveal information about different features of the gaze depending on the distribution considered. As a meaningful result, we found that Fisher information in the position distribution reflects the difficulties encountered by the subject when solving the task. Such a characterization may be of interest to understand the underlying cognitive tasks performed by the subjects, and, additionally, it can serve as a source of valuable parameters to quantitatively assess how and why the subjects budget their attention, providing psychologists and psychopedagogues with more refined neuropsychological evaluation features and tools. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|