An interactive gaming system helps people with aphasia improve word-finding and verbal fluency
How this was rated
Small RCT (n=17) in post-stroke aphasia. Early evidence for the approach; needs replication in larger samples.
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An RCT found that people with aphasia who used an interactive gaming system showed improvements in naming ability and verbal fluency compared to those receiving conventional support, suggesting game-based approaches can complement language recovery.
A small RCT suggesting that VR-based rehabilitation for post-stroke aphasia is feasible and produces signals consistent with benefit; replication in larger samples is needed.
Key findings
- Both groups significantly improved on the Boston Diagnostic Aphasia Examination (BDAE) post-treatment (CG p=0.04, EG p=0.01); no between-group difference on this measure
- Both groups significantly improved on vocabulary test (CG p=0.01, EG p=0.007)
- Only the RGSa (experimental) group improved on Communicative Activity Log - the functional communication measure
- At 16-week follow-up, only the RGSa group maintained language and communication gains; both groups retained vocabulary gains
- RGSa group also showed Fugl-Meyer Upper Extremity improvement - motor transfer to a non-trained domain
Background
Recovery of language abilities after stroke often requires intensive, sustained practice over extended periods. However, access to sufficient practice time with a speech and language professional can be limited by service constraints. Interactive technology-based approaches offer a way to supplement clinician-led support by providing engaging, self-directed language practice. The Rehabilitation Gaming System (RGS) is an interactive platform that uses game-based activities to target specific cognitive and language skills.
Grechuta and colleagues examined whether the RGS could improve naming and verbal fluency in people with aphasia following stroke.
What the researchers did
Grechuta and colleagues at multiple institutions, including the Center of Autonomous Systems and Neurorobotics at Pompeu Fabra University Barcelona, conducted this RCT (trial registration NCT02928822) with people with nonfluent aphasia. The experimental intervention, RGSa (Rehabilitation Gaming System for aphasia), used an augmented dyadic therapy model: two patients sat facing each other, and each had their arm movements tracked and mapped onto avatars. The virtual task involved requesting and handing 120 different 3D virtual objects between patients - creating intensive language-action practice grounded in language-action therapy theory. Sessions ran 8 weeks, 5 days per week, 30-40 minutes per session. The control group received equivalent-duration conventional language therapy.
Language outcomes were assessed using the Boston Diagnostic Aphasia Examination (BDAE), a vocabulary test, and the Communicative Activity Log (functional communication). Motor function was measured with the Fugl-Meyer Upper Extremity scale.
What they found
Both groups improved on standardized language measures post-treatment. The BDAE improved in both groups (CG p=0.04, EG p=0.01); the vocabulary test also improved in both (CG p=0.01, EG p=0.007). Crucially, there was no statistically significant between-group difference on these measures - both groups improved similarly on standardized testing.
The differentiation appeared on functional communication and durability. Only the RGSa group showed improvement on the Communicative Activity Log, the measure of real-world communicative participation. At 16-week follow-up, only the RGSa group maintained their language and communication gains; both groups retained vocabulary gains. The RGSa group also showed unexpected improvement in Fugl-Meyer Upper Extremity scores, suggesting motor transfer to a non-trained domain.
Why this matters
The pattern of results is nuanced: VR did not outperform standard care on standardized aphasia tests, but only VR produced gains on functional communication - arguably the more clinically relevant outcome. The durability advantage at 16 weeks is practically important for a population where relapse and plateau are common concerns. The dyadic peer-to-peer design is distinctive and relatively rare in VR communication research.
Limitations
The sample was small (n=17), limiting the power to detect between-group differences on standardized measures. Co-author Verschure has a commercial interest in Eodyne SL, which is developing the technology tested. The dyadic delivery model requires two patients to be matched and available simultaneously, which creates logistical constraints for clinical implementation.
Implications for practice
Interactive gaming systems can provide intensive, engaging language practice that complements clinician-led communication support The improvements in both naming and verbal fluency suggest that game-based practice may support broader language recovery, not just task-specific gains Technology-based approaches may help increase the overall amount of language practice people with aphasia can access
Where this connects to Therapy withVR
The study above is independent research and does not endorse any product. The notes below are commentary from withVR on how the themes in this research relate to features of Therapy withVR. The research findings are not claims about Therapy withVR.
Avatar Speech via Text Input
This study used interactive gaming for language practice - Therapy withVR lets clinicians type any sentence for avatars to speak, creating responsive conversational exchanges that promote the intensive practice this research showed improves naming and verbal fluency.
Laptop Text Display
Show written words, sentences, or picture cues on a virtual laptop inside VR - supporting the multimodal language input that complements the interactive practice approach used in this study.
Cite this study
If you reference this study in your work, the canonical citation formats are:
@article{grechuta2019,
author = {Grechuta, K. and Rubio Ballester, B. and Espin Munne, R. and Usabiaga Bernal, T. and Molina Hervas, B. and Mohr, B. and Pulvermuller, F. and San Segundo, R. and Verschure, P.},
title = {Augmented Dyadic Therapy Boosts Recovery of Language Function in Patients With Nonfluent Aphasia: A Randomized Controlled Trial},
journal = {Stroke},
year = {2019},
doi = {10.1161/STROKEAHA.118.023729},
url = {https://withvr.app/evidence/studies/grechuta-2019}
}TY - JOUR
AU - Grechuta, K.
AU - Rubio Ballester, B.
AU - Espin Munne, R.
AU - Usabiaga Bernal, T.
AU - Molina Hervas, B.
AU - Mohr, B.
AU - Pulvermuller, F.
AU - San Segundo, R.
AU - Verschure, P.
TI - Augmented Dyadic Therapy Boosts Recovery of Language Function in Patients With Nonfluent Aphasia: A Randomized Controlled Trial
JO - Stroke
PY - 2019
DO - 10.1161/STROKEAHA.118.023729
UR - https://withvr.app/evidence/studies/grechuta-2019
ER - Know of research that should be in this hub? If a relevant peer-reviewed study is not listed here, send the reference to hello@withvr.app. The hub is kept up to date as the literature grows.
Funding & independence
Spain Ministry of Economy Plan Nacional project SANAR (grant BES-2014-068791); European Commission ERC under agreement 341196 (CDAC project). Trial registration: NCT02928822. Disclosure: co-author P. Verschure (ICREA) declares being a founder and interim CEO of Eodyne SL, which aims at commercializing the RGSa technology tested in this trial. This COI is disclosed in the paper's declaration statement. No withVR BV involvement in funding, study design, or authorship. Summary prepared independently by withVR using the published paper.