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Effects of Tool Handling on Language Processing

15 juillet 2026 mis à jour par: Aline de Souza Pagnussat, Federal University of Health Science of Porto Alegre

Analysis of the Effect of a Tool-Handling Intervention in a Specific Context on the Linguistic Processing of Healthy Young Adults

This randomized controlled trial aims to investigate the effects of a context-specific tool-handling intervention on linguistic processing in healthy young adults. Participants will be allocated into three groups: a dexterous tool-use training group, a dexterous manual training group without tools, and a Control group.

The dexterous tool-use training group will perform a task-oriented activity involving the use of tweezers to place colored beads into a mandala within a specific functional context. The intervention requires sequential motor planning, force control, precision, and goal-directed tool use. The dexterous manual training group without tools will perform a similar bead-placement activity without tool use, involving direct hand manipulation and lower task complexity. Both intervention groups will participate in synchronous online sessions via Google Meet for 20 minutes per day, five times per week, over a two-week period.

The Control group will not receive any structured intervention and will instead be instructed to perform one activity of daily living using the non-dominant upper limb once per day during the two-week period.

Linguistic processing will be assessed through a sentence judgment task involving sentences with and without semantic violations, in which participants will classify the sentences as correct or incorrect while electroencephalographic activity (EEG) is recorded. Additionally, sleep quality and manual dexterity will also be evaluated.

The findings of this study may contribute to understanding the relationship between tool-related motor training and linguistic processing, particularly the interaction between motor and language systems in healthy young adults. Additionally, the study may provide evidence regarding neurophysiological changes associated with context-specific motor interventions.

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Type d'étude

Interventionnel

Inscription (Estimé)

60

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

    • Rio Grande do Sul
      • Porto Alegre, Rio Grande do Sul, Brésil, 90050170
        • UFCSPA
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte

Accepte les volontaires sains

Oui

La description

Inclusion Criteria:

  • Healthy young adults aged between 19 and 24 years;
  • Right-handed individuals.

Exclusion Criteria:

  • Previous diagnosis of neurological and/or psychiatric disorders;
  • History of traumatic brain injury;
  • Use of psychoactive substances or medications that may affect cognitive functioning;
  • Pregnancy or suspected pregnancy.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Traitement
  • Répartition: Randomisé
  • Modèle interventionnel: Affectation parallèle
  • Masquage: Double

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Comparateur actif: Contrôler
Participants allocated to the control group will not receive structured training. They will be instructed to perform one activity of daily living using the non-dominant upper limb once per day during the two-week study period.
Expérimental: Dexterous tool-use training
The intervention will be supervised by a researcher through assynchronous way. Participants will perform a task-oriented activity involving the use of tweezers to place colored beads into a mandala within a functional and goal-directed context.
Comparateur actif: Dexterous manual training group without tools
The intervention will be supervised by a researcher through assynchronous way. Participants will perform a bead-placement activity directly with their hands, without the use of tools.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Assessment of Synthatic Processing Performance - Reaction time
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Linguistic processing will be evaluated through a computerized sentence judgment task composed of 60 sentences containing grammatical agreement violations and control sentences. Reaction time will be measured as the time elapsed between the presentation of each sentence and the participant's button press indicating whether the sentence is grammatically correct or incorrect. Mean reaction time across trials will be reported in milliseconds (ms).
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Assessment of Synthatic Processing Performance - Accuracy
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Linguistic processing will be evaluated through a computerized sentence judgment task composed of 60 sentences containing grammatical agreement violations and control sentences. Accuracy will be assessed as the absolute number of correct responses. The absolute number of incorrect responses (errors) will also be recorded.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
N200 Event-Related Potential Mean Amplitude
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Event-related potentials (ERPs) will be recorded using electroencephalography (EEG) during a computerized linguistic judgment task involving sentences with and without gender and number agreement violations. The mean amplitude of the N200 component will be measured within the predefined time window and electrodes of interest.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
P300 Event-Related Potential Mean Amplitude
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Event-related potentials (ERPs) will be recorded using electroencephalography (EEG) during a computerized linguistic judgment task involving sentences with and without gender and number agreement violations. The mean amplitude of the P300 component will be measured within the predefined time window and electrodes of interest.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
N200 Event-Related Potential Peak Latency
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Event-related potentials (ERPs) will be recorded using electroencephalography (EEG) during a computerized linguistic judgment task involving sentences with and without gender and number agreement violations. The peak latency of the N200 component will be measured within the predefined time window and electrodes of interest.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
P300 Event-Related Potential Peak latency
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Event-related potentials (ERPs) will be recorded using electroencephalography (EEG) during a computerized linguistic judgment task involving sentences with and without gender and number agreement violations. The peaky latency of the P300 component will be measured within the predefined time window and electrodes of interest.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Assessment of Syntactic Production - Hierarchical Embedding in Spontaneous Discourse
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Syntactic production will be assessed through a spontaneous discourse task using the "Picnic Scene" from the Western Aphasia Battery (WAB). Speech samples will be audio-recorded, transcribed, and analyzed using the NILC-Metrix platform. Hierarchical embedding will be quantified as an index of syntactic complexity.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Assessment of Syntactic Production - Clauses per Sentence in Spontaneous Discourse
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Syntactic production will be assessed through a spontaneous discourse task using the "Picnic Scene" from the Western Aphasia Battery (WAB). Speech samples will be audio-recorded, transcribed, and analyzed using the NILC-Metrix platform. Clauses per sentence will be calculated as a measure of syntactic complexity.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Assessment of Syntactic Production - Left-Branching Load (Frazier Index) in Spontaneous Discourse
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
SSyntactic production will be assessed through a spontaneous discourse task using the "Picnic Scene" from the Western Aphasia Battery (WAB). Speech samples will be audio-recorded, transcribed, and analyzed using the NILC-Metrix platform. Left-branching load will be quantified using the Frazier Index.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Manual dexterity
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Manual dexterity, visuomotor coordination, and executive functioning will be assessed using the Grooved Pegboard Test (GPT). Participants will insert grooved pegs into a board as quickly as possible using both dominant and non-dominant hands. Completion time (in seconds) will be recorded for each hand.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)

Autres mesures de résultats

Mesure des résultats
Description de la mesure
Délai
Assessment of Sleep Quality
Délai: Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)
Sleep quality will be assessed using the Pittsburgh Sleep Quality Index (PSQI). The questionnaire evaluates subjective sleep quality, sleep latency, sleep duration, sleep efficiency, sleep disturbances, use of sleep medication, and daytime dysfunction. Total scores range from 0 to 21, with scores above 5 indicating poor sleep quality.
Change from PRE assessment (up to 1 week before intervention) to POST assessment (up to 1 week after intervention completion)

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

31 juillet 2026

Achèvement primaire (Estimé)

31 décembre 2026

Achèvement de l'étude (Estimé)

31 mars 2027

Dates d'inscription aux études

Première soumission

11 juin 2026

Première soumission répondant aux critères de contrôle qualité

15 juillet 2026

Première publication (Réel)

22 juillet 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

22 juillet 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

15 juillet 2026

Dernière vérification

1 juin 2026

Plus d'information

Termes liés à cette étude

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • TOOLANG

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

NON

Description du régime IPD

No plan to share individual participant data (IPD). Data will not be shared due to ethical and confidentiality considerations related to participant privacy and the terms of informed consent.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .