scholarly journals Sustained Neural Activity Patterns during Working Memory in the Human Medial Temporal Lobe

2007 ◽  
Vol 27 (29) ◽  
pp. 7807-7816 ◽  
Author(s):  
N. Axmacher ◽  
F. Mormann ◽  
G. Fernandez ◽  
M. X Cohen ◽  
C. E. Elger ◽  
...  
2020 ◽  
Author(s):  
Hongmi Lee ◽  
Buddhika Bellana ◽  
janice chen

Narratives are increasingly used to study naturalistic human memory and its brain mechanisms. Narratives—audiovisual movies, spoken stories, and written stories—consist of multiple inter-related and temporally unfolding events which are rich in semantic and emotional content. These characteristics drive intersubject neural synchrony in the default mode network, where abstract situation models are represented and reinstated. Medial temporal lobe structures interact with the cortical sub-regions of the default mode network to support the encoding and recall of narrative events. Narrative memories are frequently communicated across individuals, resulting in the transmission of experiences and neural activity patterns between people. Recent advances in neuroimaging and naturalistic stimulus analysis provide valuable insights into narrative memory and the human memory system in general.


2009 ◽  
Vol 47 (1) ◽  
pp. 112-122 ◽  
Author(s):  
Dylan D. Wagner ◽  
Viviane Sziklas ◽  
Krista E. Garver ◽  
Marilyn Jones-Gotman

2009 ◽  
Vol 15 (4) ◽  
pp. 536-546 ◽  
Author(s):  
PABLO CAMPO ◽  
FERNANDO MAESTÚ ◽  
IRENE GARCÍA-MORALES ◽  
ANTONIO GIL-NAGEL ◽  
BRYAN STRANGE ◽  
...  

AbstractIt has been traditionally assumed that medial temporal lobe (MTL) is not required for working memory (WM). However, animal lesion and electrophysiological studies and human neuropsychological and neuroimaging studies have provided increasing evidences of a critical involvement of MTL in WM. Based on previous findings, the central aim of this study was to investigate the contribution of the MTL to verbal WM encoding. Here, we used magnetoencephalography (MEG) to compare the patterns of MTL activation of 9 epilepsy patients suffering from left hippocampal sclerosis with those of 10 healthy matched controls while they performed a verbal WM task. MEG recordings allow detailed tracking of the time course of MTL activation. We observed impaired WM performance associated with changes in the dynamics of MTL activity in epilepsy patients. Specifically, whereas patients showed decreased activity in damaged MTL, activity in the contralateral MTL was enhanced, an effect that became significant in the 600- to 700-ms interval after stimulus presentation. These findings strongly support the crucial contribution of MTL to verbal WM encoding and provide compelling evidence for the proposal that MTL contributes to both episodic memory and WM. Whether this pattern is signaling reorganization or a normal use of a damaged structure is discussed. (JINS, 2009, 15, 536–546.)


2011 ◽  
Vol 71 ◽  
pp. e382
Author(s):  
Masato Inoue ◽  
Masafumi Nejime ◽  
Akichika Mikami

2012 ◽  
Vol 32 (10) ◽  
pp. 3584-3589 ◽  
Author(s):  
A. Jeneson ◽  
J. T. Wixted ◽  
R. O. Hopkins ◽  
L. R. Squire

2016 ◽  
Vol 89 ◽  
pp. 485-494 ◽  
Author(s):  
Robin I. Goodrich ◽  
Andrew P. Yonelinas

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