0100 Human Sleep Spindles Coupled To Hippocampal Sharp Wave Ripples Have Characteristic EEG Features
نویسندگان
چکیده
منابع مشابه
Hippocampal sharp wave-ripples linked to slow oscillations in rat slow-wave sleep.
Slow oscillations originating in the prefrontal neocortex during slow-wave sleep (SWS) group neuronal network activity and thereby presumably support the consolidation of memories. Here, we investigated whether the grouping influence of slow oscillations extends to hippocampal sharp wave-ripple (SPW) activity thought to underlie memory replay processes during SWS. The prefrontal surface EEG and...
متن کاملCoordinated Interactions between Hippocampal Ripples and Cortical Spindles during Slow-Wave Sleep
Sleep is characterized by a structured combination of neuronal oscillations. In the hippocampus, slow-wave sleep (SWS) is marked by high-frequency network oscillations (approximately 200 Hz "ripples"), whereas neocortical SWS activity is organized into low-frequency delta (1-4 Hz) and spindle (7-14 Hz) oscillations. While these types of hippocampal and cortical oscillations have been studied ex...
متن کاملRole of Hippocampal CA2 Region in Triggering Sharp-Wave Ripples
Sharp-wave ripples (SPW-Rs) in the hippocampus are implied in memory consolidation, as shown by observational and interventional experiments. However, the mechanism of their generation remains unclear. Using two-dimensional silicon probe arrays, we investigated the propagation of SPW-Rs across the hippocampal CA1, CA2, and CA3 subregions. Synchronous activation of CA2 ensembles preceded SPW-R-r...
متن کاملPacing Hippocampal Sharp-Wave Ripples With Weak Electric Stimulation
Sharp-wave ripples (SWRs) are spontaneous neuronal population events that occur in the hippocampus during sleep and quiet restfulness, and are thought to play a critical role in the consolidation of episodic memory. SWRs occur at a rate of 30-200 events per minute. Their overall abundance may, however, be reduced with aging and neurodegenerative disease. Here we report that the abundance of SWR...
متن کاملAwake hippocampal sharp-wave ripples support spatial memory.
The hippocampus is critical for spatial learning and memory. Hippocampal neurons in awake animals exhibit place field activity that encodes current location, as well as sharp-wave ripple (SWR) activity during which representations based on past experiences are often replayed. The relationship between these patterns of activity and the memory functions of the hippocampus is poorly understood. We...
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ژورنال
عنوان ژورنال: Sleep
سال: 2019
ISSN: 0161-8105,1550-9109
DOI: 10.1093/sleep/zsz067.099