Competition between parallel sensorimotor learning systems

• Autores: Albert, Scott T.; Jang, Jihoon; Modchalingam, Shanaathanan; 't Hart, Bernard Marius; Henriques, Denise; Lerner, Gonzalo Martin; Della Maggiore, Valeria Monica; Haith, Adrian M.; Krakauer, John W.; Shadmehr, Reza
• Año de publicación: 2022
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: motor; learning; competition; explicit/implicit
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Sensorimotor learning is supported by at least two parallel systems: a strategic process that benefits from explicit knowledge and an implicit process that adapts subconsciously. How do these systems interact? Does one system´s contributions suppress the other, or do they operate independently? Here, we illustrate that during reaching, implicit and explicit systems both learn from visual target errors. This shared error leads to competition such that an increase in the explicit system´s response siphons away resources that are needed for implicit adaptation, thus reducing its learning. As a result, steady-state implicit learning can vary across experimental conditions, due to changes in strategy. Furthermore, strategies can mask changes in implicit learning properties, such as its error sensitivity. These ideas, however, become more complex in conditions where subjects adapt using multiple visual landmarks, a situation which introduces learning from sensory prediction errors in addition to target errors. These two types of implicit errors can oppose each other, leading to another type of competition. Thus, during sensorimotor adaptation, implicit and explicit learning systems compete for a common resource: error.
Fil: Albert, Scott T.. University Johns Hopkins; Estados Unidos. University of North Carolina; Estados Unidos
Fil: Jang, Jihoon. University Johns Hopkins; Estados Unidos. Vanderbilt University School of Medicine; Estados Unidos
Fil: Modchalingam, Shanaathanan. York University; Canadá
Fil: 't Hart, Bernard Marius. York University; Canadá
Fil: Henriques, Denise. York University; Canadá
Fil: Lerner, Gonzalo Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Fisiología y Biofísica Bernardo Houssay. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Fisiología y Biofísica Bernardo Houssay; Argentina
Fil: Della Maggiore, Valeria Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Fisiología y Biofísica Bernardo Houssay. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Fisiología y Biofísica Bernardo Houssay; Argentina
Fil: Haith, Adrian M.. University Johns Hopkins; Estados Unidos
Fil: Krakauer, John W.. University Johns Hopkins; Estados Unidos
Fil: Shadmehr, Reza. University Johns Hopkins; Estados Unidos