Article

Advances in technology are providing new forms of
human-computer interaction. The current study examined one form of human-computer
interaction, augmented reality (AR), whereby subjects train in the real-world
workspace with virtual objects projected by the computer.
Motor performances were
compared with those obtained while subjects used a traditional human-computer
interaction, that is, a personal computer (PC) with a mouse. METHODS: Patients
used goal-directed arm movements to play AR and PC versions of the Fruit Ninja
video game. The 2 versions required the same arm movements to control the game
but had different cognitive demands. With AR, the game was projected onto the
desktop, where subjects viewed the game plus their arm movements simultaneously,
in the same visual coordinate space. In the PC version, subjects used the same
arm movements but viewed the game by looking up at a computer monitor. RESULTS:
Among 18 patients with chronic hemiparesis after stroke, the AR game was
associated with 21% higher game scores (P = .0001), 19% faster reaching times (P
= .0001), and 15% less movement variability (P = .0068), as compared to the PC
game. Correlations between game score and arm motor status were stronger with the
AR version. CONCLUSIONS: Motor performances during the AR game were superior to
those during the PC game.
This result is due in part to the greater cognitive
demands imposed by the PC game, a feature problematic for some patients but
clinically useful for others.
Mode of human-computer interface influences
rehabilitation therapy demands and can be individualized for patients.
CI - (c) The Author(s) 2015.
- Réalité augmentée

Langue : ANGLAIS