Build-A-Castle MI BCI: Effect of High and Low MI BCI Exercise Intensities on Mental Fatigue and Enjoyment
Translated title
Build-A-Castle MI BCI: Effekten af høj og lav MI BCI træningsintensiteter på mental træthed og fornøjelse
Authors
Klebæk, Kirstine Johanne Stougaard ; Nielsen, Jacob Hørstrup Lauge ; Pedersen, Mads Diemer Wartho
Term
4. term
Education
Publication year
2024
Submitted on
2024-05-29
Pages
12
Abstract
Motor imagery brain–computer interfaces (MI-BCIs) let people control a computer by imagining movements; they are used in neurorehabilitation for people with cerebral palsy. Turning MI-BCI exercises into a game can make training more motivating. Some rehabilitation games already mix BCI exercises with ordinary, non-BCI interactions between repetitions, but it is unclear how the length and frequency of these non-BCI breaks affect enjoyment and mental fatigue. We explored this by testing three game structures with 12 healthy participants. Two structures set the intensity of MI-BCI repetitions: a high-intensity version with few but long non-BCI breaks, and a low-intensity version with frequent but brief non-BCI breaks. In a third, self-paced version, players decided when to take non-BCI breaks. Across structures, enjoyment and mental fatigue did not differ significantly. However, task performance was significantly better in the high-intensity structure. Although qualitative data suggested participants preferred about 8 +/- 2 MI-BCI exercises before taking a break, their behavior in the self-paced structure did not match this. As a result, the preferred number of MI-BCI repetitions before a non-BCI break remains inconclusive.
Motorisk forestillingsbaserede hjerne-computer-grænseflader (MI-BCI) gør det muligt at styre et computersystem ved at forestille sig bevægelser; de bruges i neurorehabilitering for personer med cerebral parese. At gøre MI-BCI-øvelser til et spil kan øge motivationen i træningen. Nogle rehabiliteringsspil blander allerede BCI-øvelser med almindelige, ikke-BCI-interaktioner mellem gentagelser, men det er uklart, hvordan længde og hyppighed af sådanne ikke-BCI-pauser påvirker oplevet sjov og mental træthed. Vi undersøgte dette ved at teste tre spilstrukturer med 12 raske deltagere. To strukturer fastsatte intensiteten af MI-BCI-gentagelser: en høj-intens version med få men lange ikke-BCI-pauser og en lav-intens version med hyppige men korte ikke-BCI-pauser. I en tredje, selvvalgt version bestemte deltagerne selv, hvornår de tog ikke-BCI-pauser. På tværs af strukturer var der ingen signifikante forskelle i sjov eller mental træthed. Derimod var præstationen i opgaven signifikant bedre i høj-intens-strukturen. Selvom kvalitative data pegede på, at deltagerne foretrak omkring 8 +/- 2 MI-BCI-øvelser, før de tog en pause, afspejlede deres adfærd i den selvvalgte struktur ikke dette. Den foretrukne mængde MI-BCI-gentagelser før en ikke-BCI-pause er derfor uafklaret.
[This apstract has been rewritten with the help of AI based on the project's original abstract]
Keywords