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Eye Hand Coordination

Eye Hand Coordination. Lab # 7. Outline. 1. Eye Hand Coordination Concept. 2. Eye Hand Coordination Concept. 3. Eye Hand Coordination Medical Background. 4. Eye Hand Coordination Applications. 5. Eye Hand Coordination Recommendations. 6. Eye Hand Coordination Test.

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Eye Hand Coordination

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  1. Eye Hand Coordination Lab # 7

  2. Outline 1 Eye Hand Coordination Concept 2 Eye Hand Coordination Concept 3 Eye Hand Coordination Medical Background 4 Eye Hand Coordination Applications 5 Eye Hand Coordination Recommendations 6 Eye Hand Coordination Test Eye-Hand Coordination

  3. Eye Hand Coordination Concept Do you… Have good eye/hand coordination? Eye-Hand Coordination

  4. Eye Hand Coordination • In the public debate eye-hand coordination is often cited as the most important skill for playing action games and becomes the first line of defence for the position that you can learn from games • It is the process of coordinating movements of the eyes and hand/arm system so that they both move toward the same target. Eye-Hand Coordination

  5. Eye Hand Coordination (Cont.) • This skill is often demonstrated through activities such as stringing, lacing, and cutting. • The development of eye-hand coordination begins around the age of eight to fourteen months as children begin to attempt to pick up objects they see. Eye-hand coordination continues to develop throughout the early elementary years. Eye-Hand Coordination

  6. Eye-Hand coordination tasks Hand-eye coordination involves four tasks: • Identification of the object to be manipulated. • Ballistic arm motion to the surrounding area of the object. • Pre-shaping and alignment of the hand. • Manipulation or grasping of the object. Eye-Hand Coordination

  7. Eye Hand Coordination Medical Background Do you… Have good eye/hand coordination? Eye-Hand Coordination

  8. Eye • The eyes are a major part of hand-eye coordination. • They see much around us. • However the eyes don’t really see objects. They actually see the light that the objects reflect or give off. • The light rays enter the eyes through transparent tissues and the eyes change the rays into electrical signals that are sent to the brain, which interprets them as visual images. Eye-Hand Coordination

  9. Hand • To reach for an object, the brain identifies the objects images in both retinas and finds its directions relative to the two foveae. • To compute the objects location relative to the reaching arm, the brain must consider both eyes' orientations in the head, and the position of the head itself, whose rotation changes the distance between the eyes and the shoulder Eye-Hand Coordination

  10. Eye & hand • It is known that people reach more accurately when the eyes look straight at the target, rather than right or left of it. This happens even in darkness when the target and hand are no longer visible. Eye-Hand Coordination

  11. Eye Hand Coordination Importance Do you… Have good eye/hand coordination? Eye-Hand Coordination

  12. Importance • Eye-hand coordination is a very important skill for several reasons. First, many self-help skills, such as tying shoes and buttoning coats, require well developed eye-hand coordination. • In addition, more advanced skills, such as writing and cutting, also require proficiency in this area. • As adults, we rely on well-developed eye-hand coordination on a daily basis. Driving a car and using a computer are just two of the ways adults use eye-hand coordination. Eye-Hand Coordination

  13. Eye Hand Coordination Applications Do you… Have good eye/hand coordination? Eye-Hand Coordination

  14. Applications • Hand-eye coordination makes a big difference in our lives. • We need good eye–hand coordination to reach out and pick up a coffee cup, press a doorbell, or catch a ball. • Surgeons wouldn’t be able to perform delicate surgeries • Construction workers wouldn’t be able to swing a hammer or make cuts accurately without it. • Examples of tests of hand-eye coordination involve aiming (dart throwing), tracking (rotary pursuit), and tracing (mirror tracer, and two arm-coordination test). Eye-Hand Coordination

  15. Applications (Cont.) • Relates to ball skills, handwriting, cutting with scissors, and drawing • There are many different types of materials and activities that are designed to promote eye-hand coordination skills. Such lace cards, Stringing beads, Pegs and pegboards, Nesting boxes, Stacking cones, Puzzles, Scissors Eye-Hand Coordination

  16. Be A Surgeon! Do you… Have good eye/hand coordination? Eye-Hand Coordination

  17. Be a Dental! Do you… Have good eye/hand coordination? Eye-Hand Coordination

  18. Be a Radiographer! Do you… Have good eye/hand coordination? Eye-Hand Coordination

  19. Be A Pilot! Do you… Have good eye/hand coordination? Eye-Hand Coordination

  20. Be A Foot Ball Player! Do you… Have good eye/hand coordination? Eye-Hand Coordination

  21. Eye Hand Coordination Recommendations Do you… Have good eye/hand coordination? Eye-Hand Coordination

  22. Recommendations To enhance your eye-Hand Coordination; take the following into account: • Both hands should be fully utilized. • The two hands should begin and end their motions at the same time. • The motions of the hands and arms should be symmetrical and simultaneous. • The work should be designed to emphasize the worker’s preferred hand. Eye-Hand Coordination

  23. Recommendations (Cont.) • The worker’s two hands should never be idle at the same time. • Method should consist of smooth continuous curved motions rather than straight motions with sudden changes in direction • Use momentum to facilitate task • Take advantage of gravity – Don’t oppose it. Eye-Hand Coordination

  24. Eye Hand Coordination Test Do you… Have good eye/hand coordination? Eye-Hand Coordination

  25. Equipment • Scoring Mirror Tracer: Measures an individual's basic level of function in the areas of color identification, shape and size discrimination, eye-hand coordination, understanding of spatial relationships, and ability to follow verbal instructions Eye-Hand Coordination

  26. SCORING MIRROR TRACER • An aluminum base with a non-conducting black (six pointed) star anodized into surface. • Hinged to one edge of the base is a mirror-finish plate of almost the same size. • Shield " 3rd plate " which operator adjusted by means of two supporting posts • Pencil-shaped stylus is electrically connected to one edge of base plate. Eye-Hand Coordination

  27. Procedure 1. The student is asked to trace the pattern on the base plate by four different ways: • Clockwise direction using dominant hand • Counter clockwise direction using dominant hand • Clockwise direction using non dominant hand • Counter clockwise direction using non dominant hand. 2. The student is asked to trace the pattern among different locations different to the reaching arm • Straight forward • 40 degrees to the left • 40 degrees to the right Eye-Hand Coordination

  28. Results (1) Eye-Hand Coordination

  29. Results (2) Eye-Hand Coordination

  30. Questions • Calculate the average time and average # of error for each trial • Compare between average time and average # of error for both trials (use bar chart) • Find the correlation between time and # of errors obtained (use scatter diagram) •  What are your observations? Discuss. (Hint use graphical configuration) Eye-Hand Coordination

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