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Neuronerd.


Jun
22
revised Is it possible to get infected with HIV from old blood?
added 29 characters in body; edited title
Jun
19
comment How is information sent from limbs to the brain exactly?
If this is something that you are interested in, the rat whisker system is the model used for decoding some of these pathways. The earlier connections are different (it's a nerve that goes directly to the brainstem), but the cortical layout is similar.
Jun
19
comment How is information sent from limbs to the brain exactly?
(for example, the roots for the arms enter between the vertebrae of the cervical region -- en.wikipedia.org/wiki/Dermatome_%28anatomy%29, legs in the lumbar, etc.)
Jun
19
comment How is information sent from limbs to the brain exactly?
@user2721465 It's not necessarily a 1-1 relationship between skin receptive field and column in the cortex (there are higher level "abstractions" in the cortex such as orientation of the stimulus, etc.). Since the information is being "filtered", there are complex relationships between the thalamic cells, and there's some degree of consolidation that goes on. The bundles of axons are converging on the cord at different levels (see a map of the dermatomes for the mapping), but the tracts are quite thick anatomically, so there's many thousands of axons in one nerve bundle.
Jun
19
comment How is information sent from limbs to the brain exactly?
This is a bit of a work in progress, but it should give you some terms to google, etc.
Jun
19
answered How is information sent from limbs to the brain exactly?
Jun
19
comment How is information sent from limbs to the brain exactly?
@user2721465 I will try to address some of these questions in my answer.
Jun
19
comment How is information sent from limbs to the brain exactly?
For a quick primer, see en.wikipedia.org/wiki/Receptive_field#Somatosensory_system, but hopefully I (or someone else) can come along and fill in the gaps in a bit.
Jun
19
accepted Long term effects of “brain freeze” on the cerebral vasculature
Jun
12
revised Do mitochondria use ATP in order make another ATP from glucose?
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Jun
12
revised Do mitochondria use ATP in order make another ATP from glucose?
added 4 characters in body; edited tags; edited title
Jun
4
comment Religion and Genetics
See this related CogSci question, but the answer cites the same references as below.
May
29
revised Why can't intermediate filaments be used as tracks by motor proteins?
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May
20
comment What is atrial fibrillation?
@Chris I would not mind at all if you (or anyone else) wanted to take that opportunity.
May
18
reviewed Leave Open Cajal's theory on contralateralization
May
18
comment What is atrial fibrillation?
@Chris My point was more that this was answered quite well by the first hit on googling "atrial fibrillation ekg". Wikipedia's chart is actually better, but I don't want to just copy large quantities of information from there.
May
18
comment What is atrial fibrillation?
en.ecgpedia.org/wiki/Atrial_Fibrillation pretty much has exactly what you are after.
May
18
reviewed Leave Open What is most simple eukaryotic genome?
May
18
reviewed Close Gene perturbation, what is it used for, explain to computer scientists?
May
18
reviewed Close What makes us all different and similar to some extent?