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Related Concept Videos

Diencephalon: Thalamus and Information Relay01:27

Diencephalon: Thalamus and Information Relay

The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is  a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological states or needs.
Functional Brain Systems: Limbic System01:15

Functional Brain Systems: Limbic System

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...
Diencephalon: Anatomical Regions01:30

Diencephalon: Anatomical Regions

The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the subthalamic...
Diencephalon: Hypothalamus and Coordination01:23

Diencephalon: Hypothalamus and Coordination

The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
Association Areas of the Cortex01:21

Association Areas of the Cortex

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:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Cerebrum: Anatomical Overview II01:11

Cerebrum: Anatomical Overview II

Each cerebral hemisphere can be divided into three main regions. The outermost region, the cerebral cortex, is a thin layer (2 to 4 millimeters thick) made up of gray matter, consisting of neuron cell bodies, dendrites, glial cells, and blood vessels. The middle region, or white matter, is primarily composed of myelinated nerve fibers organized into three types of large tracts: association fibers, commissures, and projection fibers. Association fibers connect different areas within the same...

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High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
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Published on: May 10, 2012

Frontal cortex-like functions of the subthalamic nucleus.

Christelle Baunez1, Sylvie Lardeux

  • 1Laboratoire de Neurobiologie de la Cognition, UMR6155 CNRS, Université de Provence Marseille Marseille, Frances.

Frontiers in Systems Neuroscience
|October 21, 2011
PubMed
Summary

The subthalamic nucleus (STN), once viewed as purely motor, is now recognized for its role in frontal functions like attention and impulse control. This review highlights recent findings on its involvement in cognitive and motivational processes.

Keywords:
attentionbasal gangliabehavioral inhibitioncompulsiondeep brain stimulationimpulsivitymotivationsubthalamic nucleus

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Area of Science:

  • Neuroscience
  • Cognitive Neuroscience
  • Neurobiology

Background:

  • The subthalamic nucleus (STN) was traditionally considered a motor control structure.
  • Recent research indicates the STN's involvement in non-motor functions.
  • Anatomical and behavioral evidence places the STN within prefrontal-associative and limbic circuits.

Purpose of the Study:

  • To review the evolving understanding of the subthalamic nucleus (STN).
  • To highlight the STN's critical role in frontal lobe functions.
  • To synthesize evidence supporting the STN's involvement in attention, inhibitory control, and motivation.

Main Methods:

  • Review of anatomical studies.
  • Analysis of behavioral data.
  • Synthesis of existing literature on STN functions.

Main Results:

  • The STN is implicated in attentional processes.
  • The STN plays a role in inhibitory control, encompassing impulsive action, compulsivity, and impulsive choice.
  • The STN is involved in motivation and reward-related behaviors.

Conclusions:

  • The subthalamic nucleus (STN) extends beyond motor control, significantly contributing to higher-level frontal functions.
  • Evidence supports the STN's integration into cognitive and affective circuits.
  • Further research into the STN's diverse roles is warranted.