They say,
"Beauty lies in the eye of the beholder".
But after four years studying human eye movement, I feel more inclined to believe that,
"Information, a lot of information, lies in the eye of the beholder.
Encoded in the way our eyes move is a lot of information that reflect our mental and psycological state. Most of these movements are involuntary; we cannot prevent them from happening. My PhD. research work has led me to read many studies investigating the relevance of different eye movements.
Pupil dilation (the pupil becomes bigger) and restrictions (the pupil becomes smaller) is one of those involuntary movements that reflects different mental and psychological states. The pupil's main function is to regulates the amount of light entering the eye. That mean that when we are looking at a scene where so much light is reflected unto our eyes, out pupil restrict. However, looking at a darker scene makes our pupils dilate to increase light intake for better vision.
However, other events can have an effect on our pupils. the fascinating thing is that most of these effects are involuntary. Lesion and drugs can cause a huge change in the pupil size which can be easily observed. Yet, very subtle changes to the pupil can happen due to external sensory events like fear, or with emotional and mental processes.
"Beauty lies in the eye of the beholder".
But after four years studying human eye movement, I feel more inclined to believe that,
"Information, a lot of information, lies in the eye of the beholder.
Encoded in the way our eyes move is a lot of information that reflect our mental and psycological state. Most of these movements are involuntary; we cannot prevent them from happening. My PhD. research work has led me to read many studies investigating the relevance of different eye movements.
Pupil dilation (the pupil becomes bigger) and restrictions (the pupil becomes smaller) is one of those involuntary movements that reflects different mental and psychological states. The pupil's main function is to regulates the amount of light entering the eye. That mean that when we are looking at a scene where so much light is reflected unto our eyes, out pupil restrict. However, looking at a darker scene makes our pupils dilate to increase light intake for better vision.
However, other events can have an effect on our pupils. the fascinating thing is that most of these effects are involuntary. Lesion and drugs can cause a huge change in the pupil size which can be easily observed. Yet, very subtle changes to the pupil can happen due to external sensory events like fear, or with emotional and mental processes.
In one of my papers [2], we investigated the efferct of the perception of risks while driving on the pupil diameter. And we found it can be a metric to determine whether a driver saw a hazard or not.
In another blog I might talk more about the different eye movements and what is hidden behind them.
If interested I have added below a list of related papers.
[1] Iskander, J., Hossny, M., & Nahavandi, S. (2018). A review on ocular biomechanic models for assessing visual fatigue in virtual reality. IEEE Access, 6, 19345-19361.
[2] Iskander, J., Hanoun, S., Hettiarachchi, I., Hossny, M., Saleh, K., Zhou, H., ... & Bhatti, A. (2018, April). Eye behaviour as a hazard perception measure. In 2018 Annual IEEE International Systems Conference (SysCon) (pp. 1-6). IEEE.
[3] Iskander, J., Jia, D., Hettiarachchi, I., Hossny, M., Saleh, K., Nahavandi, S., ... & Hanoun, S. (2018, October). Age-Related Effects of Multi-screen Setup on Task Performance and Eye Movement Characteristics. In 2018 IEEE International Conference on Systems, Man, and Cybernetics (SMC) (pp. 3480-3485). IEEE.
[4] Iskander, J., Attia, M., Saleh, K., Abobakr, A., Nahavandi, D., Hossny, M., & Nahavandi, S. (2019, October). Exploring the Effect of Virtual Depth on Pupil Diameter. In 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC) (pp. 1849-1854). IEEE.
[1] Iskander, J., Hossny, M., & Nahavandi, S. (2018). A review on ocular biomechanic models for assessing visual fatigue in virtual reality. IEEE Access, 6, 19345-19361.
[2] Iskander, J., Hanoun, S., Hettiarachchi, I., Hossny, M., Saleh, K., Zhou, H., ... & Bhatti, A. (2018, April). Eye behaviour as a hazard perception measure. In 2018 Annual IEEE International Systems Conference (SysCon) (pp. 1-6). IEEE.
[3] Iskander, J., Jia, D., Hettiarachchi, I., Hossny, M., Saleh, K., Nahavandi, S., ... & Hanoun, S. (2018, October). Age-Related Effects of Multi-screen Setup on Task Performance and Eye Movement Characteristics. In 2018 IEEE International Conference on Systems, Man, and Cybernetics (SMC) (pp. 3480-3485). IEEE.
[4] Iskander, J., Attia, M., Saleh, K., Abobakr, A., Nahavandi, D., Hossny, M., & Nahavandi, S. (2019, October). Exploring the Effect of Virtual Depth on Pupil Diameter. In 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC) (pp. 1849-1854). IEEE.
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