PMID-17167082[0] Elevated sleep spindle density after learning or after retrieval in rats.
- sleep spindles = 12–15 Hz oscillations superimposed on slow waves (<1 Hz)
- they say these 'promote' but infact they may just be effects of some lower-level synchronization / ensemble depolarization.
- used an odor-response-reward task.
- spindles reliably appear 1 hour after sleep begins.
- hippocampal ripples are temporally related to cortical spindles and both are grouped by slow oscillations.
- showed that pure exploration of novel environments (without the odorant pairing) does not change sleep spindle occurence frequency.
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[0] Eschenko O, Mölle M, Born J, Sara SJ, Elevated sleep spindle density after learning or after retrieval in rats.J Neurosci 26:50, 12914-20 (2006 Dec 13) |
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