Abstract
How to determine the test chart is very important in fixational eye movement (or microsaccades) experiment, in this paper, the selected test image can provide important information about cognitive psychology and visual information processing, especially including a random dot stereogram as a test image to test the eye movement trajectory of the subjects. According to the computer vision and image feature analysis, we can predict and determine the obvious feature region in the test chart, then, compared with the eye movement trajectory of the subjects. There is a big difference between the eye movement trajectories of each participant, and the distribution of the fixation points is very random, scattered and asymmetric, which cannot be attributed to a certain statistical distribution and cannot determine their statistical parameters, and for this reason this paper suggests that the significant test for eye movement should be an interval estimation, and the specific interval estimates are given, and also points out that the microsaccade is equivalent to the conversion between the frames of visual images; the blinks of eyes are the conversion between the various primitives in visual images. These novel results are valuable for the study of cognitive psychology and vision information processing.
Highlights
Human fixational eye movement research is closely related to the cognitive psychology, neuroscience and visual information processing
An important result obtained from this set of experiments is: in the case of symmetrical test image, the eye movement trajectory, even if it is not completely symmetrical, is fairly similar
Our experiment shows that rapid eye movement is only a physiological process associated with visual information processing, so information provided by eye movement trajectory is very limited and preliminary
Summary
Human fixational eye movement (or microsaccades) research is closely related to the cognitive psychology, neuroscience and visual information processing. Currently the study of human eye movement is still in its early stages, and the exact role of eye movements in cognitive neuroscience and cognitive psychology remains unclear. We designed four different eye movement experiments to investigate participants’ eye movement trajectories when they viewed different images including symmetrical pictures, because the test images were representative and typical. The experiments showed that eye movement trajectories have some stability, but are affected by decentrality and randomness. These features are not directly associated with the cultural background of the participant, and show some novelty compared with previous experimental results. We think that these results have important implications for the study of visual perception and cognitive psychology
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