Phase-locking of spontaneous and tone-elicited pontine waves to hippocampal theta waves during REM sleep in rats

Akihiro Karashima; Norihiro Katayama; Mitsuyuki Nakao

doi:10.1016/j.brainres.2007.08.060

Phase-locking of spontaneous and tone-elicited pontine waves to hippocampal theta waves during REM sleep in rats

Akihiro Karashima, Norihiro Katayama, Mitsuyuki Nakao

INF - Applied Information Sciences

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Temporal relationships between hippocampal theta waves and pontine waves (P waves) during rapid-eye-movement (REM) sleep were investigated in rats. P waves were phase-locked to the positive theta peak. The phase relationships of P waves elicited by a tone stimulus (P_E waves) to hippocampal theta waves were also analyzed to qualitatively clarify the mechanism of phase-locking between these two phenomena. P_E waves occurred at the positive theta peak, as seen for spontaneous P waves. This phase preference of P_E waves could be understood as that of the response probability to tone stimulus. These data suggest that the P-wave generator receives inputs that mimic theta waves. As hippocampal theta waves and P waves are known to be involved in learning and memory processes during REM sleep, the present studies could help to clarify these functions.

Original language	English
Pages (from-to)	73-81
Number of pages	9
Journal	Brain research
Volume	1182
Issue number	1
DOIs	https://doi.org/10.1016/j.brainres.2007.08.060
Publication status	Published - 2007 Nov 28

Keywords

Hippocampal theta wave
Memory
P wave
PGO wave
Phase-locking
REM sleep

ASJC Scopus subject areas

Neuroscience(all)
Molecular Biology
Clinical Neurology
Developmental Biology

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@article{e8ace33f2ec843ef82e828de2e5ef5bb,

title = "Phase-locking of spontaneous and tone-elicited pontine waves to hippocampal theta waves during REM sleep in rats",

abstract = "Temporal relationships between hippocampal theta waves and pontine waves (P waves) during rapid-eye-movement (REM) sleep were investigated in rats. P waves were phase-locked to the positive theta peak. The phase relationships of P waves elicited by a tone stimulus (PE waves) to hippocampal theta waves were also analyzed to qualitatively clarify the mechanism of phase-locking between these two phenomena. PE waves occurred at the positive theta peak, as seen for spontaneous P waves. This phase preference of PE waves could be understood as that of the response probability to tone stimulus. These data suggest that the P-wave generator receives inputs that mimic theta waves. As hippocampal theta waves and P waves are known to be involved in learning and memory processes during REM sleep, the present studies could help to clarify these functions.",

keywords = "Hippocampal theta wave, Memory, P wave, PGO wave, Phase-locking, REM sleep",

author = "Akihiro Karashima and Norihiro Katayama and Mitsuyuki Nakao",

note = "Funding Information: This work was supported by JSPS KAKENHI (17605001) and the “Academic Frontiers” Project for Private Universities (the Kansei Fukushi Research Center of Tohoku Fukushi University).",

year = "2007",

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doi = "10.1016/j.brainres.2007.08.060",

language = "English",

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T1 - Phase-locking of spontaneous and tone-elicited pontine waves to hippocampal theta waves during REM sleep in rats

AU - Karashima, Akihiro

AU - Katayama, Norihiro

AU - Nakao, Mitsuyuki

N1 - Funding Information: This work was supported by JSPS KAKENHI (17605001) and the “Academic Frontiers” Project for Private Universities (the Kansei Fukushi Research Center of Tohoku Fukushi University).

PY - 2007/11/28

Y1 - 2007/11/28

N2 - Temporal relationships between hippocampal theta waves and pontine waves (P waves) during rapid-eye-movement (REM) sleep were investigated in rats. P waves were phase-locked to the positive theta peak. The phase relationships of P waves elicited by a tone stimulus (PE waves) to hippocampal theta waves were also analyzed to qualitatively clarify the mechanism of phase-locking between these two phenomena. PE waves occurred at the positive theta peak, as seen for spontaneous P waves. This phase preference of PE waves could be understood as that of the response probability to tone stimulus. These data suggest that the P-wave generator receives inputs that mimic theta waves. As hippocampal theta waves and P waves are known to be involved in learning and memory processes during REM sleep, the present studies could help to clarify these functions.

AB - Temporal relationships between hippocampal theta waves and pontine waves (P waves) during rapid-eye-movement (REM) sleep were investigated in rats. P waves were phase-locked to the positive theta peak. The phase relationships of P waves elicited by a tone stimulus (PE waves) to hippocampal theta waves were also analyzed to qualitatively clarify the mechanism of phase-locking between these two phenomena. PE waves occurred at the positive theta peak, as seen for spontaneous P waves. This phase preference of PE waves could be understood as that of the response probability to tone stimulus. These data suggest that the P-wave generator receives inputs that mimic theta waves. As hippocampal theta waves and P waves are known to be involved in learning and memory processes during REM sleep, the present studies could help to clarify these functions.

KW - Hippocampal theta wave

KW - Memory

KW - P wave

KW - PGO wave

KW - Phase-locking

KW - REM sleep

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JO - Molecular Brain Research

JF - Molecular Brain Research

SN - 0006-8993

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Phase-locking of spontaneous and tone-elicited pontine waves to hippocampal theta waves during REM sleep in rats

Abstract

Keywords

ASJC Scopus subject areas

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