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Gaze in Action: Head-mounted Eye Tracking of Children's Dynamic Visual Attention During Naturalistic Behavior
Published on: November 14, 2018
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Generación de representaciones de dirección estables en diversas escenas visuales
Sung Soo Kim1,2,3, Ann M Hermundstad4, Sandro Romani4
1Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA. sungsoo@ucsb.edu.
Nature
|November 22, 2019
Resumen
Las moscas usan la plasticidad neural para transformar las señales visuales en una representación de rumbo estable para la navegación. Este mecanismo les permite construir un sentido de dirección completo incluso a partir de información ambiental parcial.
Área de la Ciencia:
- La neurociencia
- El comportamiento de los animales
- Biología computacional
Sus antecedentes:
- Los animales navegan usando representaciones internas de rumbo vinculadas a señales sensoriales.
- En las moscas, las neuronas de brújula en el cuerpo elipsoide representan la dirección, recibiendo información de las neuronas de anillo selectivas de características.
Objetivo del estudio:
- Investigar cómo los circuitos neuronales transforman de manera flexible las señales visuales en representaciones de dirección estables.
- Comprender el papel de la plasticidad neural para permitir representaciones de encabezados completos desde una orientación ambiental parcial.
Principales métodos:
- Imágenes de calcio de dos fotones en moscas voladoras atadas.
- Optogenética para manipular la actividad neuronal.
- Modelado computacional de circuitos.
Principales resultados:
- La actividad correlacionada entre la brújula y las neuronas visuales impulsa la plasticidad.
- Esta plasticidad permite la conversión flexible de señales visuales 2D en una representación de encabezado estable.
- La plasticidad permite a las moscas formar una representación de dirección completa a partir de la orientación en entornos nuevos.
Conclusiones:
- La plasticidad neuronal es un mecanismo clave para la transformación flexible de la visión a la cabeza en las moscas.
- Este proceso subyace a los cálculos relacionados con la memoria esenciales para la navegación en entornos complejos.
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