Motor planning of goal-directed action is tuned by the emotional valence of the stimulus: a kinematic study

Autor(es)

Esteves, P. O. ^[1] ; Oliveira, L. A. S. ^[2] ; Nogueira-Campos, A. A. ^[3] ; Saunier, G. ^[4] ; Pozzo, T. ^[5] ; Oliveira, J. M. ^[1] ; Rodrigues, E. C. ^[2] ; Volchan, E. ^[1] ; Vargas, C. D. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio de Janeiro, Lab Neurobiol 2, Inst Biofis Carlos Chagas Filho, Rio De Janeiro - Brazil

^[2] Ctr Univ Augusto Motta, Programa Posgrad Ciencias Reabilitacao, Rio De Janeiro - Brazil

^[3] Univ Fed Juiz de Fora, Inst Ciencias Biol, Dept Fisiol, Juiz De Fora - Brazil

^[4] Fed Univ Para, Inst Ciencias Biol, Lab Cognicao Motora, BR-66059 Belem, Para - Brazil

^[5] INSERM, Cognit Act & Plast Sensorimotrice U1093, UFR STAPS, Campus Univ, Dijon - France

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 6, JUL 1 2016.
• Citações Web of Science: 7

Resumo

The basic underpinnings of homeostatic behavior include interacting with positive items and avoiding negative ones. As the planning aspects of goal-directed actions can be inferred from their movement features, we investigated the kinematics of interacting with emotion-laden stimuli. Participants were instructed to grasp emotion-laden stimuli and bring them toward their bodies while the kinematics of their wrist movement was measured. The results showed that the time to peak velocity increased for bringing pleasant stimuli towards the body compared to unpleasant and neutral ones, suggesting higher easiness in undertaking the task with pleasant stimuli. Furthermore, bringing unpleasant stimuli towards the body increased movement time in comparison with both pleasant and neutral ones while the time to peak velocity for unpleasant stimuli was the same as for that of neutral stimuli. There was no change in the trajectory length among emotional categories. We conclude that during the ``reach-to-grasp{''} and ``bring-to-the-body{''} movements, the valence of the stimuli affects the temporal but not the spatial kinematic features of motion. To the best of our knowledge, we show for the first time that the kinematic features of a goal-directed action are tuned by the emotional valence of the stimuli. (AU)

• Processo FAPESP: 13/07699-0 - Centro de Pesquisa, Inovação e Difusão em Neuromatemática - NeuroMat
• Beneficiário: Oswaldo Baffa Filho
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs