Apr 22, 2021 12:44
3 yrs ago
20 viewers *
English term

thick long-range axonal tracks

English Medical Medical (general) brain anatomy
Dear colleagues,
I’m not sure about the meaning of “thick long-range axonal tracks” in the passage below: in particular, I can’t understand how “thick” relates to “axonal tracks”.
Thank you so much for any hint!

************

What is the “social brain” and what is it for? The fully developed adult human brain is organized as anatomically connected and functionally coupled intrinsic networks. These networks are held together by *** thick, long-range axonal tracks *** [Bullmore and Sporns (2012)]. Of specific importance to both allostasis and social processing are the salience network [ and the default mode network (also called the mentalizing network. The salience and default mode networks together make up an integrated network for implementing allostasis and represent its sensory consequences, called interoception [Kleckner et al. (2017)]
Responses
4 +1 tracts

Discussion

haribert (asker) Apr 23, 2021:
Dear Phil, the situation is a bit complicated. The authors of the passage I posted talk about "tracks" but they seem to quote another study by Bullmore and Sporns (written in brackets). Then, reading your answer, I looked for the original article by Bullmore and Sporns, who actually talk about "axonal tracts". So it's probably the case that the authors of the passage quoting these latter authors have misspelled "tracts"... I' m sorry: it's a bit difficult to explain..
philgoddard Apr 23, 2021:
If it says "tracts" three times, why do you assume they mean "tracks"?
haribert (asker) Apr 22, 2021:
I really wish to thank you all for your help! I have been lucky enough to find the article quoted in the passage - by Bullmore and Sporns - and the authors actually talk about "axonal tracts".. So I guess it should mean "long and thick axonal tracks"...

*****
Multiple
sclerosis is a disorder that causes sporadic autoimmune
attacks and demyelination of axonal tracts in the brain.
The probability that a specific tract will be affected by
a focal lesion is proportional to its volume, rendering
longer tracts more vulnerable. Accordingly, greater
degrees of lesion load are associated with greater loss of
topological efficiency owing to greater damage to longdistance axonal projections128
****

Responses

+1
35 mins
Selected

tracts

Likewise, axonal tracts are groups of axons running together on such a scale that they can be seen by the naked eye.
http://braininjuryhelp.com/axonal-tracts-axon-grouped-togeth...

I hope that makes "thick, long-range" self explanatory.
Note from asker:
Thank you very much, Phil! So you think it may be a type: tracts instead of "tracks"? Because I've found some instances of "axonal tracks" https://www.google.com/search?q=%22axonal+tracks%22&ei=14iBYJyhN9X6sAeTlpvACA&oq=%22axonal+tracks%22&gs_lcp=Cgdnd3Mtd2l6EAMyBggAEAgQHjoJCAAQsAMQCBAeUNElWNElYNosaAFwAHgAgAGBA4gBlwSSAQcwLjEuMC4xmAEAoAEBqgEHZ3dzLXdpesgBAcABAQ&sclient=gws-wiz&ved=0ahUKEwjc6MHSiJLwAhVVPewKHRPLBogQ4dUDCA8&uact=5 and I thought it might mean something like "paths" or "trajectories"...
Peer comment(s):

agree Reena Cohn (X) : I strongly suspect "tracks" to me misspelled
1 hr
Thanks. Yes, it gets hardly any hits compared to "tracts".
Something went wrong...
4 KudoZ points awarded for this answer. Comment: "Thank you so much, Phil, for your help! Many thanks also to Reena!"
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