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Related Concept Videos

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Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
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The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
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The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
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Related Experiment Video

Updated: Mar 9, 2026

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Dopamine Modulates the Functional Organization of the Orbitofrontal Cortex.

Thorsten Kahnt1, Philippe N Tobler2

  • 1Department of Neurology, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, and thorsten.kahnt@northwestern.edu.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|January 11, 2017
PubMed
Summary

Dopamine significantly reconfigures functional brain networks in the orbitofrontal cortex (OFC). Blocking dopamine D2 receptors altered OFC connectivity patterns, shifting connections from associative areas to the frontal cortex, suggesting neuromodulators dynamically reconfigure brain circuits.

Keywords:
connectivitydopaminefMRIorbitofrontal cortexparcellation

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neuropharmacology

Background:

  • Neuromodulators like dopamine influence neuronal firing and functional brain circuits.
  • The orbitofrontal cortex (OFC) receives dopaminergic input, but dopamine's role in OFC network organization remains unclear.

Purpose of the Study:

  • To investigate if dopaminergic activity reconfigures functional networks in the OFC by altering its brain connectivity patterns.
  • To explore the impact of dopamine D2 receptor (D2R) blockade on OFC functional subdivisions.

Main Methods:

  • Combined double-blind, placebo-controlled D2R antagonist (amisulpride) administration with resting-state functional magnetic resonance imaging (fMRI) in humans.
  • Utilized clustering methods to analyze OFC connectivity patterns and multivariate decoding to assess whole-brain connectivity changes.

Main Results:

  • Placebo group showed established OFC parcellations into two and six subregions based on connectivity.
  • Blocking D2Rs significantly altered the composition of the six-subregion OFC parcellation, indicating dopamine-dependent reconfiguration.
  • Amisulpride shifted OFC connectivity from temporal and parietal associative areas towards the frontal cortex.

Conclusions:

  • Dopamine dynamically reconfigures functional circuits within the orbitofrontal cortex.
  • Dopamine's influence on OFC connectivity may facilitate transitions between sensory processing and prefrontal recurrent processing.
  • Findings highlight a broader role for neuromodulators in dynamic brain network reconfiguration with potential clinical implications for antipsychotic action.