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Watching You Watch Video Recordings of Eye Movements Brian Garrison.

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Presentation on theme: "Watching You Watch Video Recordings of Eye Movements Brian Garrison."— Presentation transcript:

1 Watching You Watch Video Recordings of Eye Movements Brian Garrison

2 … far more information than can be captured in real time by a biological system with bandwidth limitations imposed by relatively slow transmission rates. In humans the problem was solved by having two retinas; rods that offered wide field of view and scotopic sensitivity, and cones that …

3 a

4 … far more iomnoratifn athn cna eb cuatrepd ni arel tmie yb a biological system whit nbwtdiadh lisnitatiom iopsemd yb relatively slow rtaminsisosn tersa. Ei uhamsn hte rpboelm was solved by hvagin wto nretais; rsod taht feroefd ediew ifedl of wive adn stopioc steysitnivi, dan sonce taht …

5 Oculomotor System (Eye Muscles) Three agonist/antagonist pairs: - horizontal - vertical - torsion

6 Saccades 1/4x speed

7 Saccades

8 Smooth Pursuit

9

10 Not Quite So Smooth Pursuit

11 Not Quite So Smooth Pursuit 1/4x

12 Vestibular-Ocular Response

13 Vestibular-Ocular Response 1/4x

14 Vergence

15

16 Opto-Kinetic Nystagmus

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18 Nystagmus Aftereffect 1/2x

19 Torsion

20 Torsion 1/4x

21 Miniature Eye Movements Involuntary movements of fixation Drift Independent R & L Microsaccades Return fixation to target 0.5 deg Tremor ‘physiological nystagmus’

22 Squash!


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