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Neuronerd.


Sep
17
reviewed Leave Closed What is MHC haplotype?
Sep
15
comment Could this Francobelgian comic book woman really have these 4 diseases at the same time?
This is fine for the site. The disease process is definitely a part of the biology. We're more concerned about people asking for personal treatment advice than anything.
Sep
7
comment How does core-conductor model correspond to an actual neuron?
The core conductor model is very limited in scope. It may be helpful for you to take a look at Hodgkin and Huxley's work with the compartmental models as a way of exploring the limitations of cable theory.
Sep
7
comment How does core-conductor model correspond to an actual neuron?
and the potassium efflux. There are different subtypes of these potassium channels as well (so Rm take a lot of information about conductances/resistances and jams it down into one component). My "grounds" in my circuit are a bit exaggerated, since the currents leaving and entering the axon can propagate through the ions in the extracellular milieu. I just wanted to illustrate that the conductances could be split off into the different components, but it was still justifiable to combine them.
Sep
7
comment How does core-conductor model correspond to an actual neuron?
@IllegalImmigrant The breaks (nodes of Ranvier) on the myelin sheath are modeled by the electrical nodes between the horizontal resistors in your model. These are the only places between the hillock of the axon (the pointy part at the end of the cell body) and the terminal where ions are being exchanged. At the other points along the axon, the receptors are covered over by the myelin, so no current leaks out with the movement of the ions. The vertical resistors are realistic, they just betray the complexity of the actual voltage-gated influx through sodium channels
Sep
7
reviewed Reviewed Why do we weigh less in the morning?
Sep
7
revised How does core-conductor model correspond to an actual neuron?
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Sep
7
revised How does core-conductor model correspond to an actual neuron?
added 281 characters in body
Sep
7
revised How does core-conductor model correspond to an actual neuron?
added 8 characters in body
Sep
7
comment How does core-conductor model correspond to an actual neuron?
That's probably clear as mud, and I've glossed over a lot, so feel free to ask questions and I'll fill in the gaps.
Sep
7
revised How does core-conductor model correspond to an actual neuron?
added 288 characters in body
Sep
7
answered How does core-conductor model correspond to an actual neuron?
Sep
4
comment Are there any situations in which phenylephrine is preferred to pseudoephedrine?
Okay, thanks again!
Sep
4
comment Are there any situations in which phenylephrine is preferred to pseudoephedrine?
Would phenylephrine be called "non-inotropic" or something of that nature, or is that an abuse of terminology?
Sep
4
comment Are there any situations in which phenylephrine is preferred to pseudoephedrine?
That's perfect, I hadn't thought about that.
Sep
4
accepted Are there any situations in which phenylephrine is preferred to pseudoephedrine?
Sep
3
reviewed Looks OK Does chromosomal crossover result in a mutation?
Sep
2
revised If someone were to die on the moon, would their body decay?
added 3 characters in body; edited title
Aug
31
comment Is there a biological mechanism for evolution encoded into our DNA?
(amazon.com/Why-Evolution-True-Jerry-Coyne-ebook/dp/B001QEQRJW is also a great starting point, for example)
Aug
31
comment Is there a biological mechanism for evolution encoded into our DNA?
You're trying to "bootstrap" your study of this material, and there's nothing wrong with that, but grabbing an article or two would help quickly clear up some of these fallacies (e.g., "Any time a species has needed the development of a specific feature to survive, it has developed that feature, and that feature precisely").