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Comentario sobre "En los monos que toman decisiones basadas en valores, las neuronas LIP codifican la saliencia de la
William T Newsome1, Paul W Glimcher, Jacqueline Gottlieb
1Department of Neurobiology and Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305, USA.
Science (New York, N.Y.)
|April 27, 2013
Resumen
Leathers y Olson concluyeron que las neuronas en el área intraparietal lateral (LIP) del mono solo codifican la saliencia de la señal, no el valor de acción. Esta conclusión es problemática debido al análisis temporal limitado y al fracaso para replicar la fisiología establecida de LIP.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Neurociencia cognitiva y neurociencia cognitiva.
- Neurociencia de la decisión neurociencia de la decisión.
Sus antecedentes:
- El área cortical intraparietal lateral (LIP) está implicada en la toma de decisiones basadas en valores.
- Investigaciones anteriores sugieren que las neuronas LIP codifican el valor de acción y la saliencia de la señal.
Objetivo del estudio:
- Evaluar críticamente las conclusiones extraídas por Leathers y Olson (2012) con respecto a la actividad neuronal LIP durante la toma de decisiones.
- Para abordar el alcance temporal y los problemas de replicación fisiológica en el estudio original.
Principales métodos:
- Análisis de las respuestas neuronales en el área LIP durante las tareas conductuales.
- Comparación de las características fisiológicas observadas con hallazgos previamente establecidos en LIP.
Principales resultados:
- Las conclusiones primarias de Leathers y Olson se basaron en épocas limitadas de los primeros juicios, no en todo el proceso de toma de decisiones.
- El estudio no pudo replicar las características fisiológicas clave de las neuronas LIP informadas en épocas temporales posteriores por otros laboratorios.
Conclusiones:
- La conclusión general de que las neuronas del LIP codifican exclusivamente la saliencia de la señal durante la toma de decisiones no está totalmente respaldada.
- Las limitaciones metodológicas con respecto al análisis temporal y la replicación plantean preocupaciones sobre los hallazgos del estudio original.
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