The function of the sleep spindle: A physiological index of intelligence and a mechanism for sleep-dependent memory consolidation
| Autor: | Stuart Fogel, Carlyle Smith |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Cognitive Neuroscience
Intelligence Sleep spindle Electroencephalography Brain mapping 050105 experimental psychology 03 medical and health sciences Behavioral Neuroscience 0302 clinical medicine Memory medicine Animals Humans Learning 0501 psychology and cognitive sciences Wakefulness Brain Mapping Intelligence quotient medicine.diagnostic_test Memoria 05 social sciences Brain Waves Sleep in non-human animals Nap Neuropsychology and Physiological Psychology Memory consolidation Sleep Psychology Neuroscience 030217 neurology & neurosurgery |
| Zdroj: | Neuroscience & Biobehavioral Reviews. 35:1154-1165 |
| ISSN: | 0149-7634 |
| Popis: | Until recently, the electrophysiological mechanisms involved in strengthening new memories into a more permanent form during sleep have been largely unknown. The sleep spindle is an event in the electroencephalogram (EEG) characterizing Stage 2 sleep. Sleep spindles may reflect, at the electrophysiological level, an ideal mechanism for inducing long-term synaptic changes in the neocortex. Recent evidence suggests the spindle is highly correlated with tests of intellectual ability (e.g.; IQ tests) and may serve as a physiological index of intelligence. Further, spindles increase in number and duration in sleep following new learning and are correlated with performance improvements. Spindle density and sigma (14-16Hz) spectral power have been found to be positively correlated with performance following a daytime nap, and animal studies suggest the spindle is involved in a hippocampal-neocortical dialogue necessary for memory consolidation. The findings reviewed here collectively provide a compelling body of evidence that the function of the sleep spindle is related to intellectual ability and memory consolidation. |
| Databáze: | OpenAIRE |
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