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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.
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...
Working Memory01:24

Working Memory

Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this information.
Brainstem: Control Centers of Medulla01:21

Brainstem: Control Centers of Medulla

The medulla oblongata is a crucial part of the brainstem responsible for controlling various autonomic and involuntary functions. It contains several nuclei, including the olivary, cuneate, gracile, and solitary nuclei.
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
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...

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Related Experiment Video

Updated: Jun 1, 2026

An Appetitive Spatial Working Memory Task for Mice in a Semi-Automated 8-Arm Radial Maze, Reducing Fearful Memory Association in the Maze
14:24

An Appetitive Spatial Working Memory Task for Mice in a Semi-Automated 8-Arm Radial Maze, Reducing Fearful Memory Association in the Maze

Published on: July 29, 2025

Thalamic mediodorsal nucleus and working memory.

Yumiko Watanabe1, Shintaro Funahashi

  • 1Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8568, Japan.

Neuroscience and Biobehavioral Reviews
|May 25, 2011
PubMed
Summary
This summary is machine-generated.

The thalamic mediodorsal nucleus (MD) plays a key role in working memory, particularly in processing prospective information. Its neural circuits, connected with the prefrontal cortex (PFC), are crucial for this function.

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High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
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High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

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Related Experiment Videos

Last Updated: Jun 1, 2026

An Appetitive Spatial Working Memory Task for Mice in a Semi-Automated 8-Arm Radial Maze, Reducing Fearful Memory Association in the Maze
14:24

An Appetitive Spatial Working Memory Task for Mice in a Semi-Automated 8-Arm Radial Maze, Reducing Fearful Memory Association in the Maze

Published on: July 29, 2025

T-maze Forced Alternation and Left-right Discrimination Tasks for Assessing Working and Reference Memory in Mice
17:45

T-maze Forced Alternation and Left-right Discrimination Tasks for Assessing Working and Reference Memory in Mice

Published on: February 26, 2012

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain
10:06

High-resolution Functional Magnetic Resonance Imaging Methods for Human Midbrain

Published on: May 10, 2012

Area of Science:

  • Neuroscience
  • Cognitive Science

Background:

  • Working memory is essential for temporarily maintaining and processing information.
  • The prefrontal cortex (PFC) is known to be vital for working memory functions.
  • Emerging evidence suggests the mediodorsal nucleus of the thalamus (MD) also plays a significant role.

Purpose of the Study:

  • To investigate the participation of the mediodorsal nucleus (MD) in working memory.
  • To compare the role of the MD with the prefrontal cortex (PFC) in processing prospective information.
  • To elucidate the neural mechanisms underlying MD's contribution to working memory.

Main Methods:

  • Neurophysiological studies examining neuronal activity.
  • Analysis of sustained delay activity in MD neurons.
  • Population vector analysis to track information transformation.

Main Results:

  • MD neurons exhibit sustained delay activity, a neural correlate of information maintenance.
  • MD neurons primarily represent motor response information, indicating a role in prospective aspects of working memory.
  • Sensory-to-motor information transformation occurs earlier in the MD compared to the PFC.

Conclusions:

  • The mediodorsal nucleus (MD) is significantly involved in the prospective aspects of working memory.
  • Reciprocal connections between the MD and PFC form reverberating neural circuits crucial for prospective information processing.
  • The MD contributes to working memory by facilitating earlier sensory-to-motor transformations than the PFC.