Predicting episodic and spatial memory performance from hippocampal resting-state functional connectivity: Evidence for an anterior-posterior division of function

Hippocampus ◽  
2017 ◽  
Vol 28 (1) ◽  
pp. 53-66 ◽  
Author(s):  
Jonas Persson ◽  
Eva Stening ◽  
Kristin Nordin ◽  
Hedvig Söderlund
Keyword(s):  
Functional Connectivity ◽  
Spatial Memory ◽  
Resting State ◽  
Memory Performance ◽  
Resting State Functional Connectivity ◽  
Posterior Division ◽  
Anterior Posterior

Resting state functional connectivity of the hippocampus along the anterior–posterior axis and its association with glutamatergic metabolism

Cortex ◽  
2016 ◽  
Vol 81 ◽  
pp. 104-117 ◽  
Author(s):  
Gerd Wagner ◽  
Alexander Gussew ◽  
Stefanie Köhler ◽  
Feliberto de la Cruz ◽  
Stefan Smesny ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Resting State ◽  
Resting State Functional Connectivity ◽  
Anterior Posterior ◽  
Anterior Posterior Axis

scholarly journals Parallel hippocampal-parietal circuits for self- and goal-oriented processing

2021 ◽  
Vol 118 (34) ◽  
pp. e2101743118 ◽  
Author(s):  
Annie Zheng ◽  
David F. Montez ◽  
Scott Marek ◽  
Adrian W. Gilmore ◽  
Dillan J. Newbold ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Cognitive Processes ◽  
Resting State ◽  
Spatial Navigation ◽  
Affective Processing ◽  
Resting State Functional Connectivity ◽  
Diverse Range ◽  
Memory Network ◽  
Stimulus Recognition ◽  
Anterior Posterior

The hippocampus is critically important for a diverse range of cognitive processes, such as episodic memory, prospective memory, affective processing, and spatial navigation. Using individual-specific precision functional mapping of resting-state functional MRI data, we found the anterior hippocampus (head and body) to be preferentially functionally connected to the default mode network (DMN), as expected. The hippocampal tail, however, was strongly preferentially functionally connected to the parietal memory network (PMN), which supports goal-oriented cognition and stimulus recognition. This anterior–posterior dichotomy of resting-state functional connectivity was well-matched by differences in task deactivations and anatomical segmentations of the hippocampus. Task deactivations were localized to the hippocampal head and body (DMN), relatively sparing the tail (PMN). The functional dichotomization of the hippocampus into anterior DMN-connected and posterior PMN-connected parcels suggests parallel but distinct circuits between the hippocampus and medial parietal cortex for self- versus goal-oriented processing.

scholarly journals Episodic memory in aspects of brain information transfer by resting-state network topology

2021 ◽  
Author(s):  
Tianyi Yan ◽  
Gongshu Wang ◽  
Li Wang ◽  
Tiantian Liu ◽  
Ting Li ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Episodic Memory ◽  
Resting State ◽  
Information Transfer ◽  
Memory Performance ◽  
Structural Connectivity ◽  
Transfer Mechanism ◽  
Resting State Functional Connectivity ◽  
Cognitive Information ◽  
Encoding And Retrieval

Studies suggest that resting-state functional connectivity conveys cognitive information; also, activity flow mediates cognitive information transfer. However, the exact mechanism of interregional interactions underlying episodic memory remains unclear. We performed a combined analysis of task-evoked activity and resting-state functional connectivity by activity flow mapping to estimate the information transfer mechanism of episodic memory. We found that the cognitive control and attentional networks were the most recruited structures in information transfers during both encoding and retrieval processes; these networks were correlated with task-evoked activation. Differences in information transfer intensity between encoding and retrieval mainly existed in the visual, somatomotor and hippocampal systems. Furthermore, information transfer showed high predictive power for episodic memory ability and mediated relationships between task-evoked activation and memory performance. Additional analysis indicated that structural connectivity had a transportive role in information transfer. Finally, our study presented the information transfer mechanism of episodic memory from multiple neural perspectives.

scholarly journals Resting‐state functional connectivity of the human hippocampus in periadolescent children: Associations with age and memory performance

2021 ◽  
Author(s):  
David E. Warren ◽  
Anthony J. Rangel ◽  
Nicholas J. Christopher‐Hayes ◽  
Jacob A. Eastman ◽  
Michaela R. Frenzel ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Resting State ◽  
Memory Performance ◽  
Resting State Functional Connectivity ◽  
Human Hippocampus

scholarly journals Resting-state functional connectivity relates to interindividual variations in positive memory

2021 ◽  
Author(s):  
Ayako Isato ◽  
Tetsuya Suhara ◽  
Makiko Yamada
Keyword(s):  
Individual Differences ◽  
Functional Connectivity ◽  
Resting State ◽  
Brain Activity ◽  
Memory Performance ◽  
Region Of Interest ◽  
Network Connectivity ◽  
Resting State Functional Connectivity ◽  
Interindividual Variations ◽  
Frontal Operculum

Individual differences in positive memory recollection are of interest in mental health, as positive memories can help protect people against stress and depression. However, it is unclear how individual differences in positive memory recollection are reflected in brain activity in the resting state. Here, we investigate the resting-state functional connectivity (FC) associated with interindividual variations in positive memory by employing cluster-level inferences based on randomization/permutation region of interest (ROI)-to-ROI analyses. We identified a cluster of FCs that was positively associated with positive memory performance, including the frontal operculum, central operculum, parietal operculum, Heschl's gyrus, and planum temporale. The current results suggest that positive memory is innervated by frontotemporal network connectivity, which may have implications for future investigations of vulnerability to stress and depression.

scholarly journals Association of Hippocampal Substructure Resting-State Functional Connectivity with Memory Performance in Older Adults

2018 ◽  
Vol 26 (6) ◽  
pp. 690-699 ◽  
Author(s):  
Stephen F. Smagula ◽  
Helmet T. Karim ◽  
Anusha Rangarajan ◽  
Fernando Pasquini Santos ◽  
Sossena C. Wood ◽  
...  
Keyword(s):  
Older Adults ◽  
Functional Connectivity ◽  
Resting State ◽  
Memory Performance ◽  
Resting State Functional Connectivity ◽  
With Memory

scholarly journals Spindle - slow oscillation coupling correlates with memory performance and connectivity changes in a hippocampal network after sleep

2021 ◽  
Author(s):  
Lisa Marie Bastian ◽  
Anumita Samanta ◽  
Demetrius Ribeiro de Paula ◽  
Frederik Weber ◽  
Robby Schoenfeld ◽  
...  
Keyword(s):  
Functional Connectivity ◽  
Spatial Memory ◽  
Learning Strategies ◽  
Memory Consolidation ◽  
Resting State ◽  
Memory Performance ◽  
Slow Oscillation ◽  
Long Term Memory ◽  
Holistic Understanding ◽  
Hippocampal Network

After experiences are encoded, post-encoding reactivations during sleep have been proposed to mediate long-term memory consolidation. Spindle-slow oscillation coupling during NREM sleep is a candidate mechanism through which a hippocampal-cortical dialogue may strengthen a newly formed memory engram. Here, we investigated the role of fast spindle- and slow spindle-slow oscillation coupling in the consolidation of spatial memory in humans with a virtual water maze task involving allocentric and egocentric learning strategies. Furthermore, we analyzed how resting-state functional connectivity evolved across learning, consolidation, and retrieval of this task using a data-driven approach. Our results show task-related connectivity changes in the executive control network, the default mode network, and the hippocampal network at post-task rest. The hippocampal network could further be divided into two subnetworks of which only one showed modulation by sleep. Decreased functional connectivity in this subnetwork was associated with higher spindle-slow oscillation coupling power, which was also related to better memory performance at test. Overall, this study contributes to a more holistic understanding of the functional resting-state networks and the mechanisms during sleep associated to spatial memory consolidation.

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