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- Notice of deletion 4 answers
Some questions or answers can take a while to write. For example, I had written a question on http://productivity.stackexchange.com, and one day it got silently deleted, meaning I cannot access it any more (luckily I had a backup, without all the links that used to be though).
Why don't you notify the author about the deletion, and send the removed content by email? I find that removing content and leaving no access to it without warning is highly disrespectful to the people who took the time to write it.
Here is the question I had asked that got removed. As you can see, it would have been painful for me to re-write the whole question if I hadn't saved it:
Question: Are there any recent results on the performances of head tracking devices used to move the mouse cursor in comparison with traditional mice? (e.g. using Fitts's law)
Question's details: As I use a head tracking device to move the mouse cursor for efficiency purpose, I was curious to know whether the Fitts's law can be applied to it (i.e. is not restricted to hands). Fitts's law says "Fitts' law has been shown to apply under a variety of conditions, with many different limbs (hands, feet, head-mounted sights, eye gaze)". The wiki entry has some interesting references:
Errol R., Hoffmann (1991) "A comparison of hand and foot movement times". Ergonomics, Vol. 34, No. 4, pp. 397-406 >A comparison of hand and foot movement times. (foot vs hand results are clearly presented)
So, R. H. Y. and Griffin, M. J. (2000) "Effects of target movement direction cue on head-tracking performance". Ergonomics, Vol. 43, No. 3, pp. 360–376. >Effects of a target movement direction cue on hea... [Ergonomics. 2000] (head moves aren't used to move a cursor)
So, R. H. Y. and Cheung, K. M., (2002) "Combined and interacting effects of hand and head movement lags on discrete manual performance in a virtual environment." Ergonomics, 45, 2002, pp. 105–123. > http://www-ieem.ust.hk/dfaculty/so/pdf/So+Chung-2002-ergonomics.pdf (head moves aren't used to move a cursor)
So, R. H. Y., Cheung, K. M. and Goonetilleke, R. S. (1999) "Target-directed head movements in a head-coupled virtual environment: predicting the effects of lags using Fitts' law". Human Factors, Vol. 41, No. 3, 1999, pp. 474–486. > Target-directed head movements in a head-coupled... [Hum Factors. 1999] (head moves are used to move a cursor but a lag is introduced and there is no direct comparison with hands. Also I don't have access to the full article.)
I skimmed through them but it seems like none of them address the performances of a head tracking device to move the mouse cursor. Furthermore they are pretty old and I don't know to what extent those results can be extended for hands-free mouse performances. Lastly for whatever reason most of them seem to focus on lag / delay. Are there any recent results on the performances of head tracking devices used to move the mouse cursor in comparison with traditional mice?
The best I have found so far is Ashdown, Mark, Kenji Oka, and Yoichi Sato. "Combining head tracking and mouse input for a GUI on multiple monitors." CHI'05 extended abstracts on Human factors in computing systems. ACM, 2005. Combining head tracking and mouse input for a GUI on multiple monitors, but results seem preliminary, don't use Fitts's law, and anyway just use head tracking to switch between different monitors.
I'm also interested in eye tracking as a mouse and foot mice performances (Errol R., Hoffmann (1991) gives hints for the latter). Ideally I would like to have table comparing all these ways to control the mouse ( hand / head / foot / eye).