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Methods to Explore the Influence of Top-down Visual Processes on Motor Behavior
Published on: April 16, 2014
Representación diferencial de la percepción y la acción en la corteza frontal
Andrew B Schwartz1, Daniel W Moran, G Anthony Reina
1Department of Neurobiology, University of Pittsburgh, 3025 East Carson Street, Pittsburgh, PA 15203, USA. abs21@pitt.edu
Science (New York, N.Y.)
|January 17, 2004
Resumen
Los investigadores crearon una ilusión motora para distinguir los movimientos percibidos del brazo de los movimientos reales. Los movimientos reales del brazo se procesan en la corteza motora primaria, mientras que los movimientos percibidos están en la corteza premotora ventral.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- El control del motor es el control del motor.
- Ciencias Cognitivas Ciencias Cognitivas.
Sus antecedentes:
- Comprender la base neuronal del control motor es crucial para descifrar los movimientos humanos complejos.
- Diferenciar entre la representación del cerebro de la acción intencionada y la acción percibida es un desafío clave en la neurociencia.
Objetivo del estudio:
- Investigar los sustratos neuronales subyacentes a la percepción del movimiento del brazo frente a la ejecución del movimiento real del brazo.
- Para determinar si las trayectorias de movimiento percibidas y reales están representadas en distintas regiones del cerebro.
Principales métodos:
- Se empleó una ilusión motora en sujetos humanos para disociar el movimiento percibido del brazo del movimiento real durante una tarea de dibujo de figuras.
- La actividad cortical se registró en monos que realizaban una tarea similar para analizar las representaciones neuronales de las trayectorias de movimiento.
Principales resultados:
- Los movimientos reales de los brazos se representaron en la corteza motora primaria (M1) en monos.
- Las trayectorias de movimiento visualizadas y percibidas se localizaron en la corteza premotora ventral (PMv) en monos.
Conclusiones:
- Las representaciones neuronales para la percepción de la acción y la ejecución de la acción se pueden distinguir en el cerebro.
- Estas distintas representaciones pueden residir en estructuras corticales separadas, específicamente M1 y PMv.
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