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.
Original language | English |
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Pages (from-to) | 73-81 |
Number of pages | 9 |
Journal | Brain research |
Volume | 1182 |
Issue number | 1 |
DOIs | |
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