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El desajuste sensorimotor espacial aumenta la excitabilidad de la corteza somatosensorial primaria: información de un
Matteo Girondini1, Tommaso Bertoni2, Massimo Montanaro3
1Department of Psychology, University of Milano-Bicocca, Italy; Mind and Behavior Technological Center, University of Milano-Bicocca, Italy; MySpace Lab, Department of Clinical Neuroscience, University Hospital of Lausanne, Switzerland.
Resumen
El desajuste espacial en la realidad virtual altera la excitabilidad de la corteza somatosensorial. La retroalimentación incongruente aumentó los componentes potenciales evocados somatosensoriales tempranos (P45), lo que sugiere una reorganización funcional en la corteza somatosensorial primaria (SI).
Área de la Ciencia:
- La neurociencia
- Ciencias cognitivas
- Interacción hombre-computadora
Sus antecedentes:
- El sistema somatosensorial suele mantener una función estable.
- La corteza somatosensorial exhibe plasticidad en respuesta a los cambios sensoriales (privación, experiencia).
- La plasticidad relacionada con la incongruencia espacial en los circuitos sensorimotores se entiende menos.
Objetivo del estudio:
- Investigar la reorganización funcional de la corteza somatosensorial.
- Examinar la interdependencia entre la actividad motora y somatosensorial durante las interacciones ambientales.
- Evaluar los efectos del desajuste espacial en los circuitos sensoriomotores.
Principales métodos:
- Utilizó un paradigma de realidad virtual (VR) con desajuste espacial.
- Los participantes (n=21) realizaron una tarea de interacción VR con retroalimentación táctil congruente o incongruente.
- Potenciales evocados somatosensoriales (SEP) medidos por medio de la estimulación del nervio mediano derecho antes y después de la tarea.
Principales resultados:
- La condición de retroalimentación incongruente mostró una mayor excitabilidad en el componente SEP temprano (P45).
- La condición de retroalimentación congruente mostró una tendencia hacia una disminución de la excitabilidad.
- Los hallazgos sugieren cambios funcionales en la corteza somatosensorial primaria (SI).
Conclusiones:
- La incongruencia espacial en los bucles sensoriomotores puede inducir la reorganización de la corteza somatosensorial.
- El acoplamiento temporal de la actividad neuronal de partes del cuerpo no relacionadas puede impulsar estos cambios.
- Los mecanismos de atención también podrían influir en los efectos observados, abriendo caminos para futuras investigaciones.
Palabras clave:
Integración sensoriomotoraPotenciales evocados somatosensorialesPlasticidad somatosensorialRealidad virtualMás Videos Relacionados
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