scholarly journals Memory signals are temporally dissociated in and across human hippocampus and perirhinal cortex

2012 ◽  
Vol 15 (8) ◽  
pp. 1167-1173 ◽  
Author(s):  
Bernhard P Staresina ◽  
Juergen Fell ◽  
Anne T A Do Lam ◽  
Nikolai Axmacher ◽  
Richard N Henson
Keyword(s):  
Perirhinal Cortex ◽  
Human Hippocampus ◽  
Memory Signals

Two kinds of memory signals in neurons of the human hippocampus

2021 ◽  
Author(s):  
Zhisen Urgolites ◽  
John Wixted ◽  
Stephen Goldinger ◽  
Megan H. Papesh ◽  
David M. Treiman ◽  
...  
Keyword(s):  
Computational Models ◽  
Recognition Task ◽  
Brain Regions ◽  
Anterior Cingulate ◽  
Neural Representation ◽  
Single Unit Activity ◽  
Test Items ◽  
Human Hippocampus ◽  
Memory Signals ◽  
Sparse Pattern

Abstract Some studies of the neural representation of memory in the human hippocampus have identified memory signals reflecting the categorical status of test items (novel vs. repeated). Others have identified pattern-separated, episodic memory signals reflecting recognition of particular test items. Here, we report that both kinds of memory signals can be found in the hippocampus, and we consider their possible functions. We recorded single-unit activity from four brain regions (hippocampus, amygdala, anterior cingulate, and prefrontal cortex) of epilepsy patients as they performed a continuous recognition task. The generic signal was found in all four regions, whereas the sparse, pattern-separated signal was limited to the hippocampus, as predicted by longstanding computational models.

Distributed category-specific recognition-memory signals in human perirhinal cortex

Hippocampus ◽  
2015 ◽  
Vol 26 (4) ◽  
pp. 423-436 ◽  
Author(s):  
Chris B. Martin ◽  
Rosemary A. Cowell ◽  
Paul L. Gribble ◽  
Jessey Wright ◽  
Stefan Köhler
Keyword(s):  
Recognition Memory ◽  
Perirhinal Cortex ◽  
Specific Recognition ◽  
Memory Signals
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