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    Área de la Ciencia:

    • Interacción hombre-computadora Interacción hombre-computadora.
    • La táctica es la táctica táctil.
    • La realidad virtual es la realidad virtual.

    Sus antecedentes:

    • La estimulación muscular eléctrica (EMS, por sus siglas en inglés) muestra potencial para la realidad virtual (VR, por sus siglas en inglés) y la percepción háptica del peso.
    • Comprender los factores que influyen en el realismo y la efectividad del SME es crucial para su aplicación práctica.

    Objetivo del estudio:

    • Investigar sistemáticamente el impacto del ángulo del codo, el aumento de peso, el peso base y las características del usuario en el realismo percibido y la intensidad del SME.
    • Desarrollar directrices para el diseño háptico ergonómico y personalizado en VR/AR.

    Principales métodos:

    • Un experimento dentro de los sujetos con 35 participantes que realizan una tarea de ajuste de peso utilizando EMS en los brazos.
    • El realismo fue calificado en una escala de Likert, con la intensidad EMS y varios parámetros físicos registrados.
    • El análisis incluyó los efectos de los ángulos de codo (45 °, 90 °, 135 °), los pares de pesos (0,15-5 kg) y la biometría del usuario.

    Principales resultados:

    • La ergonomía tiene un impacto significativo en el realismo; los ángulos de codo neutros (90°) y abiertos (135°) arrojaron un mayor realismo que los ángulos agudos (45°).
    • El realismo percibido se correlacionó con el peso base, con un aumento de 2.0 kg que actúa como un punto dulce perceptual.
    • La edad más avanzada, el IMC más alto y una mayor fuerza de agarre se asociaron con resultados específicos del SME, informando una métrica de "eficiencia del SME".

    Conclusiones:

    • El diseño ergonómico y los ajustes personalizados son clave para optimizar la retroalimentación háptica basada en EMS en VR.
    • El estudio proporciona información crítica para el desarrollo de sistemas hápticos adaptativos para mejorar la experiencia del usuario en tecnologías inmersivas.
    • Los hallazgos apoyan una hipótesis de "enmascaramiento sensorial" y resaltan la importancia de la variabilidad entre sujetos en la aplicación del SME.