Related Experiment Video
Updated: Oct 30, 2025
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
984
The nucleus reuniens orchestrates prefrontal-hippocampal synchrony during spatial working memory
1University of Delaware, Newark, DE, 19711, United States.
Neuroscience and Biobehavioral Reviews
|July 4, 2021
Summary
The nucleus reuniens (Re) in the brain is crucial for spatial working memory by facilitating communication between the prefrontal cortex (PFC) and hippocampus. This review explores how the Re orchestrates this synchrony for cognitive tasks.
Area of Science:
- Neuroscience
- Cognitive Science
- Behavioral Neuroscience
Background:
- Spatial working memory relies on the hippocampus and prefrontal cortex (PFC).
- Hippocampal-PFC oscillatory synchronization increases with working memory demand.
- Rodent models are vital for studying human working memory mechanisms.
Purpose of the Study:
- To review current findings on the nucleus reuniens (Re) role in spatial working memory.
- To explore how the Re facilitates prefrontal-hippocampal synchronization.
- To discuss future research directions for understanding Re's function.
Main Methods:
- Review of rodent literature on spatial working memory tasks.
- Analysis of anatomical connectivity between the Re, mPFC, and hippocampus.
- Examination of oscillatory synchronization patterns during working memory tasks.
Main Results:
- The nucleus reuniens (Re) is reciprocally connected to the medial prefrontal cortex (mPFC) and hippocampus.
- The Re is critical for spatial working memory in rodents.
- The Re acts as a key anatomical pathway for mPFC-hippocampal communication.
Conclusions:
- The Re plays a vital role in orchestrating long-range synchrony within the prefrontal-hippocampal network.
- Understanding the Re's mechanisms is key to advancing spatial working memory research.
- Further investigation is needed to fully elucidate the Re's contribution to cognitive functions.
Related Concept Videos
01:24Working Memory
507
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...
507
01:14Role of Cerebellum and Prefrontal Cortex in Memory
709
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
709
01:19Role of Hippocampus in Memory
700
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
700
01:27Diencephalon: Thalamus and Information Relay
2.7K
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...
2.7K
01:23Diencephalon: Hypothalamus and Coordination
2.7K
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...
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...
2.7K