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Videos de Conceptos Relacionados

Reason and Intuition01:37

Reason and Intuition

The human brain processes information for decision-making using one of two routes: an intuitive system and a rational system (Epstein, 1994; popularized by Kahneman, 2011 as System 1 and System 2, respectively). The intuitive system is quick, impulsive, and operates with minimal effort, relying on emotions or habits to provide cues for what to do next, while the rational system is logical, analytical, deliberate, and methodical. Research in neuropsychology suggests that the brain can only use...
Decision Making: P-value Method01:09

Decision Making: P-value Method

The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can have a...
Decision Making: Traditional Method01:14

Decision Making: Traditional Method

The process of hypothesis testing based on the traditional method includes calculating the critical value, testing the value of the test statistic using the sample data, and interpreting these values.
First, a specific claim about the population parameter is decided based on the research question and is stated in a simple form. Further, an opposing statement to this claim is also stated. These statements can act as null and alternative hypotheses, out of which a null hypothesis would be a...
Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...
Decision Making01:20

Decision Making

Decision-making is a fundamental cognitive process that involves evaluating alternatives and selecting among them. This process can range from simple choices, such as deciding what to wear, to complex decisions, like choosing a major in college or a career path. The complexity of the decision often dictates the approach we use, which can be broadly categorized into two types: automatic and controlled decision-making.
Automatic decision-making is fast, intuitive, and relies on gut feelings...

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Updated: Jun 22, 2026

Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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Published on: April 15, 2015

Sustratos corticales para decisiones exploratorias en humanos.

Nathaniel D Daw1, John P O'Doherty, Peter Dayan

  • 1Gatsby Computational Neuroscience Unit, University College London (UCL), Alexandra House, 17 Queen Square, London WC1N 3AR, UK. daw@gatsby.ucl.ac.uk

Nature
|June 17, 2006
PubMed
Resumen

Este estudio revela distintas regiones cerebrales para la exploración frente a la explotación en la toma de decisiones. La corteza frontopolar y el sulco intraparietal están activos durante la exploración, mientras que el estriado y la corteza prefrontal ventromedial apoyan la explotación.

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Investigating the Function of Deep Cortical and Subcortical Structures Using Stereotactic Electroencephalography: Lessons from the Anterior Cingulate Cortex
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Área de la Ciencia:

  • La neurociencia es la neurociencia.
  • Ciencias Cognitivas Ciencias Cognitivas.
  • Ciencia de la decisión Ciencia de la decisión

Sus antecedentes:

  • La toma de decisiones bajo incertidumbre implica equilibrar la recopilación de información (exploración) y la utilización de los conocimientos existentes (explotación).
  • Si bien se conocen los sustratos neuronales para la explotación, los para la exploración siguen siendo menos comprendidos.
  • La teoría del aprendizaje por refuerzo proporciona marcos computacionales para la comprensión de estos procesos.

Objetivo del estudio:

  • Identificar los correlatos neuronales de la toma de decisiones exploratoria y explotativa en los seres humanos.
  • Caracterizar los sistemas cerebrales que apoyan el dilema exploración-explotación.
  • Proponer un modelo computacional de selección de acción bajo incertidumbre.

Principales métodos:

  • Los sujetos humanos realizaron una tarea de juego para obtener opciones de exploración-explotación.
  • El modelado computacional caracterizó las estrategias del sujeto para el dilema.
  • La resonancia magnética funcional (fMRI) identificó patrones de actividad cerebral asociados con decisiones exploratorias y explotativas.

Principales resultados:

  • La corteza frontopolar y el sulco intraparietal mostraron activación preferencial durante las decisiones exploratorias.
  • El estriato y la corteza prefrontal ventromedial estaban activos durante las decisiones explotativas basadas en valores.
  • La toma de decisiones fue modelada como un cambio entre distintos modos de comportamiento.

Conclusiones:

  • Distintos circuitos neuronales apoyan los modos de toma de decisiones exploratorias y explotativas.
  • La corteza frontopolar y el sulco intraparietal son claves para la exploración.
  • El estriado y la corteza prefrontal ventromedial son cruciales para la explotación, alineándose con los modelos de aprendizaje por refuerzo.