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K complex

K complex

high amplitude, diphasic frontocental slow waves in the electroencephalogram related to arousal from sleep by a sound; characteristic of sleep stages 2, 3, and 4.


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Re:

I mean that, like you said, complex organisms didn't evolve for a long time. If there was a sudden evolution into complex life, why did it happen in the first place? Surely the simple life forms that evolved into the more complex life ...

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by animartco
Mon Jun 03, 2013 3:24 pm
 
Forum: Evolution
Topic: Is evolution as simple as we think?
Replies: 17
Views: 4244

Do We Have The Freedom Of Choice?

... thoughts, but what is your feeling about it? To me, they look and function just like a very sophisticated robot might do! Or what about more complex animals, like mammals or birds? Do you consider plants to be completely deterministic, since we probably cannot say that they have any kind ...

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by biohazard
Mon Apr 08, 2013 9:08 am
 
Forum: Cell Biology
Topic: Do We Have The Freedom Of Choice?
Replies: 20
Views: 2363

Do We Have The Freedom Of Choice?

... the same mechanisms as the one neuron did that we originally examined. Take billions of neurons and weave them into a fascinating, extraordinarily complex organ such as the human brain. Surely, it is now so delicate and magnificent that we cannot even fully comprehend its awesomeness - but consists ...

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by biohazard
Wed Apr 03, 2013 9:44 am
 
Forum: Cell Biology
Topic: Do We Have The Freedom Of Choice?
Replies: 20
Views: 2363

QRS complex

... from each cell of the heart are summed together to give the overall vector of the electrical flow. We see that on an EKG and talk about the QRS complex as a result. That is only made possible by the fact that an electrical engineer that made the EKG has cunningly made one recording lead the ...

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by daniel.kurz
Tue Mar 19, 2013 1:29 pm
 
Forum: Physiology
Topic: QRS complex
Replies: 2
Views: 1257

Re: QRS complex

remember your vectors back in physics. The heart is in a tilted position. the action potential moves accordingly.

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by david23
Fri Mar 15, 2013 11:22 pm
 
Forum: Physiology
Topic: QRS complex
Replies: 2
Views: 1257
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