Human memory formation is accompanied by rhinal–hippocampal coupling and decoupling

10.1038/nn759 ◽  
2001 ◽  
Vol 4 (12) ◽  
pp. 1259-1264 ◽  
Author(s):  
Jürgen Fell ◽  
Peter Klaver ◽  
Klaus Lehnertz ◽  
Thomas Grunwald ◽  
Carlo Schaller ◽  
...  
Keyword(s):  
Human Memory ◽  
Memory Formation

scholarly journals Thalamic theta phase alignment predicts human memory formation and anterior thalamic cross-frequency coupling

eLife ◽  
2015 ◽  
Vol 4 ◽  
Author(s):  
Catherine M Sweeney-Reed ◽  
Tino Zaehle ◽  
Jürgen Voges ◽  
Friedhelm C Schmitt ◽  
Lars Buentjen ◽  
...  
Keyword(s):  
Human Memory ◽  
Gamma Oscillations ◽  
Memory Formation ◽  
Anterior Thalamic Nucleus ◽  
Memory Processing ◽  
Phase Alignment ◽  
Theta Frequency ◽  
Frequency Coupling ◽  
Theta Phase ◽  
Cross Frequency Coupling

Previously we reported electrophysiological evidence for a role for the anterior thalamic nucleus (ATN) in human memory formation (<xref ref-type="bibr" rid="bib29">Sweeney-Reed et al., 2014</xref>). Theta-gamma cross-frequency coupling (CFC) predicted successful memory formation, with the involvement of gamma oscillations suggesting memory-relevant local processing in the ATN. The importance of the theta frequency range in memory processing is well-established, and phase alignment of oscillations is considered to be necessary for synaptic plasticity. We hypothesized that theta phase alignment in the ATN would be necessary for memory encoding. Further analysis of the electrophysiological data reveal that phase alignment in the theta rhythm was greater during successful compared with unsuccessful encoding, and that this alignment was correlated with the CFC. These findings support an active processing role for the ATN during memory formation.

Pre-stimulus thalamic theta power predicts human memory formation

NeuroImage ◽  
2016 ◽  
Vol 138 ◽  
pp. 100-108 ◽  
Author(s):  
Catherine M. Sweeney-Reed ◽  
Tino Zaehle ◽  
Jürgen Voges ◽  
Friedhelm C. Schmitt ◽  
Lars Buentjen ◽  
...  
Keyword(s):  
Human Memory ◽  
Memory Formation ◽  
Theta Power

Frontal cortex contributes to human memory formation

10.1038/7221 ◽  
1999 ◽  
Vol 2 (4) ◽  
pp. 311-314 ◽  
Author(s):  
Randy L. Buckner ◽  
William M. Kelley ◽  
Steven E. Petersen
Keyword(s):  
Frontal Cortex ◽  
Human Memory ◽  
Memory Formation

scholarly journals Simulation of Human Episodic Memory by Using a Computational Model of the Hippocampus

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Naoyuki Sato ◽  
Yoko Yamaguchi
Keyword(s):  
Episodic Memory ◽  
Computational Model ◽  
Computational Models ◽  
Memory Search ◽  
Human Memory ◽  
Memory Formation ◽  
Human Intelligence ◽  
Memory Recall ◽  
Combined Approach ◽  
Movement Data

The episodic memory, the memory of personal events and history, is essential for understanding the mechanism of human intelligence. Neuroscience evidence has shown that the hippocampus, a part of the limbic system, plays an important role in the encoding and the retrieval of the episodic memory. This paper reviews computational models of the hippocampus and introduces our own computational model of human episodic memory based on neural synchronization. Results from computer simulations demonstrate that our model provides advantage for instantaneous memory formation and selective retrieval enabling memory search. Moreover, this model was found to have the ability to predict human memory recall by integrating human eye movement data during encoding. The combined approach between computational models and experiment is efficient for theorizing the human episodic memory.

scholarly journals Author response: Corticothalamic phase synchrony and cross-frequency coupling predict human memory formation

2014 ◽  
Author(s):  
Catherine M Sweeney-Reed ◽  
Tino Zaehle ◽  
Juergen Voges ◽  
Friedhelm C Schmitt ◽  
Lars Buentjen ◽  
...  
Keyword(s):  
Human Memory ◽  
Memory Formation ◽  
Author Response ◽  
Phase Synchrony ◽  
Frequency Coupling ◽  
Cross Frequency Coupling

Separable Routes to Human Memory Formation: Dissociating Task and Material Contributions in the Prefrontal Cortex

2004 ◽  
Vol 16 (1) ◽  
pp. 139-148 ◽  
Author(s):  
Gagan S. Wig ◽  
Michael B. Miller ◽  
Alan Kingstone ◽  
William M. Kelley
Keyword(s):  
Prefrontal Cortex ◽  
Human Memory ◽  
Memory Formation ◽  
Task Demands ◽  
Material Type ◽  
Separable Code ◽  
Incidental Memory ◽  
Task Conditions ◽  
Encoding Strategies ◽  
Posterior Anterior

The present study used fMRI to investigate functional dissociations across frontal regions during incidental memory formation. Subjects were imaged while encoding materials with differential access to phonological codes (nonfamous faces and nameable famous faces) under task conditions that encouraged elaborate (deep) or superficial (shallow) encoding strategies. Results revealed a functional dissociation between dorsal posterior regions of the prefrontal cortex (BA 6/44) that were sensitive to material type (famous vs. nonfamous), irrespective of the encoding task, and ventral anterior regions of the prefrontal cortex (BA 45/47) that were uniquely sensitive to task demands (deep vs. shallow), regardless of material type. Further, subjects realized a memorial advantage to the extent that they recruited these dissociable frontal regions. These results demonstrate a posterior/anterior dichotomy in the frontal cortex that underlies separable code-based routes to human memory formation.

scholarly journals Author response: Thalamic theta phase alignment predicts human memory formation and anterior thalamic cross-frequency coupling

2015 ◽  
Author(s):  
Catherine M Sweeney-Reed ◽  
Tino Zaehle ◽  
Jürgen Voges ◽  
Friedhelm C Schmitt ◽  
Lars Buentjen ◽  
...  
Keyword(s):  
Human Memory ◽  
Memory Formation ◽  
Author Response ◽  
Phase Alignment ◽  
Frequency Coupling ◽  
Theta Phase ◽  
Cross Frequency Coupling
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