Association between interlimb transfer and manual asymmetry: analysis of serial reaction time task

Authors

  • Lidiane Aparecida Fernandes Federal University of Ouro Preto
  • Guilherme Menezes Lage
  • Érica Cesário Defilipo Universidade Federal de Juiz de Fora, Campus Governador Valadares
  • Cristiani Junqueira Universidade Federal de Minas Gerais
  • Lucas Eduardo Antunes Bicalho Universidade Federal de Minas Gerais https://orcid.org/0000-0003-4453-6774
  • Viviane Lima Gonçalves Universidade Federal de Minas Gerais https://orcid.org/0009-0009-1097-4005
  • Beatriz Couto Fortuna Universidade Federal de Minas Gerais https://orcid.org/0000-0003-0403-0728
  • Rodrigo Flores Sartori Pontifícia Universidade Católica do Rio Grande do Sul
  • Daiana Amaral Medeiros da Silva Universidade Federal do Rio Grande do Sul https://orcid.org/0009-0001-5059-1051
  • Lilian Carla Macedo Universidade Federal de Minas Gerais
  • Tércio Apolinário-Souza Universidade Federal do Rio Grande do Sul https://orcid.org/0000-0002-2136-0238

DOI:

https://doi.org/10.47197/retos.v68.110512

Keywords:

Motor learning, Laterality, Motor control, Performance, Handedness

Abstract

Introduction: This study investigates the relationship between interlimb transfer and manual asymmetry in a serial reaction time task.              
Objective: Our hypothesis was that transfer would primarily occur from the preferred to the non-preferred hand, with the right-hand (RH) practice showing an inverse relationship with asymmetry and the left-hand (LH) practice showing a proportional relationship.       
Methodology: Thirty-two right-handed undergraduate students (16 men, 16 women) performed a finger sequence key-pressing task. We did not find significant differences in interlimb transfer or asymmetry indices. However, we did find moderate correlations between transfer and asymmetry: positive for LH and negative for RH.      
Discussion: Despite our anticipation of greater transfer from the right hand to the left, no directional transfer was detected. The task's cognitive and motor demands could explain the absence of transfer direction. As expected, the study observed no differences in asymmetry between groups. The correlation between transfer and asymmetry was significant: the RH showed an inverse relationship, suggesting it transferred more task elements to the LH.                  
Conclusions: These findings have significant implications for our understanding of motor learning and transfer, enlightening us about the complex interplay between hand dominance and task demands.

References

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Published

10-06-2025

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Original Research Article

How to Cite

Fernandes, L. A., Menezes Lage, G., Defilipo, Érica C., Junqueira, C., Antunes Bicalho, L. E., Lima Gonçalves, V., Couto Fortuna, B., Flores Sartori, R., Medeiros da Silva, D. A., Macedo, L. C., & Apolinário-Souza, T. (2025). Association between interlimb transfer and manual asymmetry: analysis of serial reaction time task. Retos, 68, 647-656. https://doi.org/10.47197/retos.v68.110512