Talk:K-complex

A fact from K-complex appeared on Wikipedia's Main Page in the Did you know column on 27 May 2009 (check views). The text of the entry was as follows:

Did you know... that the sleep K-complex is the largest electroencephalographic (EEG) event that happens to the normal human brain?

A record of the entry may be seen at Wikipedia:Recent additions/2009/May.

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Figure problem

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]

Homeostasis of synapses

"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."

This is backwards, and it contradicts the sentences below. The thresholds are lowered (the synapses are potentiated), meaning more signals fire. — Preceding unsigned comment added by Nimblecymbal (talk • contribs) 21:58, 24 January 2013 (UTC)[reply]

"Therefore, drugs that inhibit REM sleep also decrease K-complex count."

I could not find this conclusion in the study provided, nor does this sound reasonable to ascertain in the context of other information provided in this article (Wikipedia articles shouldn't offer novel analysis, but I thought I'd state this regardless). Additionally:

REM sleep suppression by antidepressants does not affect the frequency and density of K-complexes in rats (McCarthy et al., 2009).
In humans, REM sleep suppression by antidepressants with different mechanisms of action (SSRIs and TCAs) does not alter the regulation of K-complexes (Kokkinos et al., 2011).

I've removed this statement. Oro Temp (talk) 20:01, 23 December 2024 (UTC)[reply]