Proceedings of the Royal Society of London. Series B, Biological Sciences, Vol. 154, No. 956 (Jul. 25, 1961), pp. 377-397 (21 pages) A tandem spindle is defined as one in which several encapsulated ...

Sleep spindles are characteristic electroencephalogram (EEG) signatures of stage 2 non-rapid eye movement sleep. Implicated in sleep regulation and cognitive functioning, spindles may represent ...

In humans, some evidence suggests that there are two different types of spindles during sleep, which differ by their scalp topography and possibly some aspects of their regulation. To test for the ...