An example of fixations and saccades over text. This is the typical pattern of eye movement during reading. The eyes never move smoothly over still text.
- Could the text being positioned in a way that is more accommodating to these rapid saccades and fixations?
Four major cognitive systems are involved in eye movement during reading: language processing, attention, vision, and oculomotor control. Eye trackers bounce near infrared light off the interior of the eyeball, and monitor the reflection on the eye to determine gaze location.
Wang (2011) - "understanding the relationship between these observables can help us to understand how human behavior in the economy can be affected by what information people acquire, where their attention is focused, what emotional state they are in, and even what brain activity they are engaged in. This is because fixations and saccades (matched with information shown on screen) indicate how people acquire information (and what they see), time lengths of fixations indicate attention, and pupil dilation responses indicate emotion, arousal, stress, pain, or cognitive load."
- Bouncing the light off reflective materials, seeing how people follow the 'pattern' of light/imagery being refracted.
- Could create a visual and record the eye movement as they follow the information on the screen. - how could different content change their focus - how do they acquire the information.
- Sneller Chart?
Reacting to Edited Imagery
Lewis
Recordings (what they noticed):
- The bottom movement
- Stillness of some imagery
- commotion
Tom
Recordings (what they noticed):
- Lot of side-side movement
- Eyes line scattered everywhere
- Jumping between imagery (short bursts - saccades) to try and work out what was going on
- Trying to understand each image (short jumps up and and down + sideways saccades)
- Liked the images with similar textures - hard to work out what image is
Bobby
Recordings (what they noticed):
- Sudden movements
- Contrasting imagery (scattered eye-line) - smaller areas of contrasted imagery (questioned what the content was in these areas)
- Eye movement - started in centre then moved to edges, then was drawn to small contrasting imagery (fixations)
https://en.wikipedia.org/wiki/Eye_tracking
https://en.wikipedia.org/wiki/Snellen_chart
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