Human parahippocampal activity: non-REM and REM elements in wake–sleep transition
| Autor: | Alpar S. Lazar, Róbert Bódizs, Melinda Sverteczki, Péter Halász |
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| Rok vydání: | 2005 |
| Předmět: |
Hallucinations
Models Neurological Hypothalamus Sleep REM Sleep spindle Alpha wave Hippocampus Non-rapid eye movement sleep Neural Pathways Unihemispheric slow-wave sleep Humans Cortical Synchronization Wakefulness Neuroscience of sleep Slow-wave sleep Epilepsy General Neuroscience Electroencephalography Neural Inhibition Electrodes Implanted Parahippocampal Gyrus Sleep onset Sleep K-complex Psychology Neuroscience psychological phenomena and processes |
| Zdroj: | Brain Research Bulletin. 65:169-176 |
| ISSN: | 0361-9230 |
| Popis: | The covert-rapid-eye-movement (REM) sleep hypothesis of dreaming suggests that elements of REM sleep emerge during sleep onset, leading to vivid hypnagogic imagery. Based on parahippocampal electrocorticography of epileptic patients we found an increase in REM-like 1.5-3.0 Hz parahippocampal activity during wake-sleep transition, which peaks after on average 30s of sleep onset, and reaches 82% of REM sleep value. The increase in 1.5-3.0 Hz parahippocampal activity followed alpha dropout, but did not relate to short-term fluctuations in alpha waves or sleep spindles. Non-REM sleep-specific slow ( |
| Databáze: | OpenAIRE |
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