Intermanual transfer of handwriting skills: Role of visual and haptic assistance

Angelo Basteris*, Lino Bracco, Vittorio Sanguineti

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Abstrakt

Handwriting capabilities are crucial for everyday life, and typically involve the dominant hand. These skills may be lost in case of stroke or amputation. As a consequence, these subjects may need to transfer them to their non-dominant hand. Here we investigate whether, in normal subjects, inter-manual transfer can be facilitated by training in a virtual environment. We focused on two types of assistance: visual (subjects could see the reference handwriting template on a computer screen), and visual+haptic. In this case, in addition to visual display, a hand-held robot generated forces that were directed either toward the reference template (path guidance) or toward the reference trajectory (trajectory guidance). The training protocol consisted of 3 assisted exercise sessions (about 1 hr each) on 3 consecutive days. Performance on the following day was tested to assess retention. We found that visual assistance is effective in reducing movement duration, but not in improving the shape error. In contrast, visual+haptic assistance results in a significant decrease in the shape error, which is retained one day after the end of the training. These results are consistent with the notion that visual guidance improves feedback control, whereas haptic assistance improves feedforward control.

OriginalsprogEngelsk
Titel4th International Symposium on Measurement, Analysis and Modelling of Human Functions 2010, ISHF 2010
Antal sider6
Publikationsdato2010
Sider107-112
ISBN (Trykt)9781617389849
StatusUdgivet - 2010
Begivenhed4th International Symposium on Measurement, Analysis and Modelling of Human Functions 2010, ISHF 2010 - Prague, Tjekkiet
Varighed: 14. jun. 201016. jun. 2010

Konference

Konference4th International Symposium on Measurement, Analysis and Modelling of Human Functions 2010, ISHF 2010
LandTjekkiet
ByPrague
Periode14/06/201016/06/2010
Navn4th International Symposium on Measurement, Analysis and Modelling of Human Functions 2010, ISHF 2010

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