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The figure shows a sleep spindle prior to a K-complex where as the situation as stated in the text is that the K-complex usually precedes a spindle. Some readers might find this confusing. There is a need for someone to cut and paste and rejoin up its two halves to put the K-complex first.--LittleHow (talk) 11:24, 24 May 2009 (UTC)[reply]
The fifth and sixth sentences of the section on neurophysiology [“Both K-complex and delta wave activity in stage 2 sleep create slow wave (0.8 Hz) oscillation and delta (1.6-4.0 Hz). However, their topographical distribution is different, and the delta power of K-complexes is higher”] are rather difficult to understand. Bwrs (talk) 04:12, 28 June 2010 (UTC)[reply]
"The activation thresholds of cortical synapses become raised during wakefulness as they process information, and so need to be adjusted back to preserve their signal-to-noise ratio."