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Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice

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Los interruptores naturales en el comportamiento modulan rápidamente la codificación del hipocampo

Ayelet Sarel¹, Shaked Palgi¹, Dan Blum¹

¹Department of Brain Sciences, Weizmann Institute of Science, Rehovot, Israel.

|August 24, 2022

Resumen

Los circuitos cerebrales cambian rápidamente las representaciones durante los cambios de comportamiento. En los murciélagos, las neuronas del hipocampo cambiaron de codificar la propia posición a codificar conjuntamente la propia posición y la distancia entre murciélagos, lo que permite una navegación flexible.

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Área de la Ciencia:

La neurociencia
Etiología
Neurociencia computacional

Sus antecedentes:

Comprender cómo el cerebro maneja la flexibilidad del comportamiento es crucial.
La neurociencia actual a menudo estudia comportamientos individuales, lo que limita la comprensión del cambio de comportamiento.

Objetivo del estudio:

Investigar cómo los circuitos neuronales representan los interruptores entre diferentes comportamientos.
Examinar el papel de los circuitos del hipocampo en la navegación dinámica y la interacción social.

Principales métodos:

Actividad neuronal registrada en murciélagos durante el vuelo naturalista.
Utilizó un entorno etológico con murciélagos volando solos y en proximidad.
Se analizó la actividad de las neuronas CA1 del hipocampo durante la navegación y la evitación de colisiones.

Principales resultados:

Las neuronas CA1 del hipocampo cambiaron las representaciones rápidamente (dentro de los 100 ms) durante las transiciones de comportamiento.
Las neuronas cambiaron de codificar la auto-posición a codificar conjuntamente la auto-posición y la distancia entre murciélagos.
Esta codificación compleja estaba vinculada a las señales de atención y apoyaba el procesamiento eficiente de la información.

Conclusiones:

Las neuronas del hipocampo muestran una notable flexibilidad, adaptando rápidamente sus cálculos a las variables de comportamiento relevantes.
Este cambio rápido apoya la flexibilidad del comportamiento en entornos dinámicos y naturalistas.
Los hallazgos proporcionan información sobre las bases neuronales del comportamiento adaptativo y la navegación social.