Adapting myoelectric control in real-time using a virtual environment.
Richard B Woodward, Levi J Hargrove
PMID 30651109WHAT IT FOUND
In people with intact limbs, training with the arm moving may improve real-time control over training in one fixed position.
A virtual game that updated the control software improved scores after fixed-position training, but four amputees showed no clear improvement.
Key findings
01For the intact-limb group, data-collection method was a significant factor for the measured control scores.
02In the intact-limb adaptation group using passive data collection, the measured control scores improved significantly between block 1 and block 3.
03In the four amputee participants, separate block-to-block tests found no significant improvement in any metric.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
Read the rest of this summary
You get three full summaries a month, free, and we do not ask for a card. Search, the TL;DRs and your library stay unlimited either way.
What it does not show
Only 16 people with intact limbs and 4 amputees were studied, and the amputee group had no fixed-group comparison. The outcomes were control of a virtual arm or crossbow, not real prosthesis use, hand function, or daily activities. All amputees were at least intermediate users of myoelectric pattern recognition, so results may not apply to new users. The amputee group used five postures instead of seven, so their task was not identical to the intact-limb group. The paper did not designate a single primary outcome, and several statistical tests were performed on the measured control metrics. The setup used custom EMG armbands, an embedded system, and a VR headset, so it is not a ready-to-use clinical tool.
Declared interests
No funding or conflict-of-interest declaration appears in the supplied text; the metadata lists U.S. Government, non-PHS research support.
The easy way to misread this
Do not conclude that the virtual training game improves real-world prosthetic function for amputees. The significant improvement was in the intact-limb adaptation group after passive collection, and the four amputees showed no significant block-to-block change.