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Notes

10/06 to 12/06

 

          I have more notes than I can publish at the moment. So, instead of leaving you in the dark until I do publish them, Iíve decided to post them here.

          Notes will be removed when they become moot.

  

12/25/06

Laterality: Hand Dominance: Things to Consider

 

Do changes in keyboard tilt (i.e. the left side of keyboard is higher than the right side, or vice versa) affect hand dominance?

 

Differences in keyboard height appear to only affect hand dominance only if the wrists are resting on a surface

        The wrist on the higher side would have to extend more than the other wrist, potentially reducing blood flow and nerve conduction.

         However there would be more pressure on the wrist on the higher side, since it is more extended, and this pressure might easily outweigh the potential reduction in blood flow and nerve conduction.

 

People with a winged scapula condition or with limited work space may tend to move their mousepad so that part of the mousepad is under the keyboard, lifting one side of the keyboard higher.

 

Original Note:

Laterality: Hand Dominance: Things to Consider

 

Differences in keyboard height (i.e. the left side of keyboard is higher than the right side, or vice versa) affect hand dominance?

 

Differences in keyboard height affect hand dominance only if the wrists are resting on a surface? (the wrist on the higher side would have to extend more than the other wrist, potentially reducing blood flow and nerve conduction).

 

People with winged scapula or with limited work space may tend to move their mousepad so that part of the mousepad is under the keyboard, lifting one side of the keyboard higher.

 

10/30/06 

Vision: Bates Method: Accommodation

 

Stereograms can relax and diverge the eyes (by parallel viewing with both eyes).


The apparent depth of pictorial images can also help to relax and diverge the eyes. Covering one eye, as is recommended for people with functional photophobia, may enhance this exercise.

Note:

         Chronically covering the should-be-dominant eye might lead to amblyopia.

         Right handers are usually right eye dominant, and vice-versa for left handers.

         To determine your eye dominance look at a wall; choose an object on the wall; extend your arm and your thumb so you can no longer see the object; while holding your thumb still, close each eye one at a time; determine which eye lines up with your thumb and the object; this is your dominant eye.


Which is more effective at diverging and relaxing the
eyes--parallel viewing with stereograms or focusing at the apparent depth of pictorial images of while occluding (blocking) one eye?

 

 

 

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