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Human cortical-hippocampal dialogue in wake and slow-wave sleep

Declarative memory consolidation is hypothesized to require a two-stage, reciprocal cortical-hippocampal dialogue. According to this model, higher frequency signals convey information from the cortex to hippocampus during wakefulness, but in the reverse direction during slow-wave sleep (SWS). Conver... Full description

Journal Title: Proceedings of the National Academy of Sciences of the United States of America 01 November 2016, Vol.113(44), pp.E6868-E6876
Main Author: Mitra, Anish
Other Authors: Snyder, Abraham Z , Hacker, Carl D , Pahwa, Mrinal , Tagliazucchi, Enzo , Laufs, Helmut , Leuthardt, Eric C , Raichle, Marcus E
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1091-6490 ; PMID: 27791089 Version:1
Link: http://pubmed.gov/27791089
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recordid: medline27791089
title: Human cortical-hippocampal dialogue in wake and slow-wave sleep
format: Article
creator:
  • Mitra, Anish
  • Snyder, Abraham Z
  • Hacker, Carl D
  • Pahwa, Mrinal
  • Tagliazucchi, Enzo
  • Laufs, Helmut
  • Leuthardt, Eric C
  • Raichle, Marcus E
subjects:
  • Cortex
  • Dynamics
  • Hippocampus
  • Memory
  • Sleep
  • Brain Waves -- Physiology
  • Cerebral Cortex -- Physiology
  • Hippocampus -- Physiology
  • Sleep -- Physiology
ispartof: Proceedings of the National Academy of Sciences of the United States of America, 01 November 2016, Vol.113(44), pp.E6868-E6876
description: Declarative memory consolidation is hypothesized to require a two-stage, reciprocal cortical-hippocampal dialogue. According to this model, higher frequency signals convey information from the cortex to hippocampus during wakefulness, but in the reverse direction during slow-wave sleep (SWS). Conversely, lower-frequency activity propagates from the information "receiver" to the "sender" to coordinate the timing of information transfer. Reversal of sender/receiver roles across wake and SWS implies that higher- and lower-frequency signaling should reverse direction between the cortex and hippocampus. However, direct evidence of such a reversal has been lacking in humans. Here, we use human resting-state fMRI and electrocorticography to demonstrate that δ-band activity and infraslow activity propagate in opposite directions between the hippocampus and cerebral cortex. Moreover, both δ activity and infraslow activity reverse propagation directions between the hippocampus and cerebral cortex...
language: eng
source:
identifier: E-ISSN: 1091-6490 ; PMID: 27791089 Version:1
fulltext: fulltext
issn:
  • 10916490
  • 1091-6490
url: Link


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titleHuman cortical-hippocampal dialogue in wake and slow-wave sleep
creatorMitra, Anish ; Snyder, Abraham Z ; Hacker, Carl D ; Pahwa, Mrinal ; Tagliazucchi, Enzo ; Laufs, Helmut ; Leuthardt, Eric C ; Raichle, Marcus E
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subjectCortex ; Dynamics ; Hippocampus ; Memory ; Sleep ; Brain Waves -- Physiology ; Cerebral Cortex -- Physiology ; Hippocampus -- Physiology ; Sleep -- Physiology
descriptionDeclarative memory consolidation is hypothesized to require a two-stage, reciprocal cortical-hippocampal dialogue. According to this model, higher frequency signals convey information from the cortex to hippocampus during wakefulness, but in the reverse direction during slow-wave sleep (SWS). Conversely, lower-frequency activity propagates from the information "receiver" to the "sender" to coordinate the timing of information transfer. Reversal of sender/receiver roles across wake and SWS implies that higher- and lower-frequency signaling should reverse direction between the cortex and hippocampus. However, direct evidence of such a reversal has been lacking in humans. Here, we use human resting-state fMRI and electrocorticography to demonstrate that δ-band activity and infraslow activity propagate in opposite directions between the hippocampus and cerebral cortex. Moreover, both δ activity and infraslow activity reverse propagation directions between the hippocampus and cerebral cortex...
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abstractDeclarative memory consolidation is hypothesized to require a two-stage, reciprocal cortical-hippocampal dialogue. According to this model, higher frequency signals convey information from the cortex to hippocampus during wakefulness, but in the reverse direction during slow-wave sleep (SWS). Conversely, lower-frequency activity propagates from the information "receiver" to the "sender" to coordinate the timing of information transfer. Reversal of sender/receiver roles across wake and SWS implies that higher- and lower-frequency signaling should reverse direction between the cortex and hippocampus. However, direct evidence of such a reversal has been lacking in humans. Here, we use human resting-state fMRI and electrocorticography to demonstrate that δ-band activity and infraslow activity propagate in opposite directions between the hippocampus and cerebral cortex. Moreover, both δ activity and infraslow activity reverse propagation directions between the hippocampus and cerebral cortex...
pmid27791089
doi10.1073/pnas.1607289113
date2016-11-01