Subbarrel patterns in somatosensory cortical barrels can emerge from local dynamic instabilities.
Subbarrel patterns in somatosensory cortical barrels can emerge from local dynamic instabilities.
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DOI:
10.1371/journal.pcbi.1000537
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发表时间:
2009-10
影响因子:
4.3
通讯作者:
Land PW
中科院分区:
文献类型:
--
作者:
Ermentrout B;Simons DJ;Land PW
Complex spatial patterning, common in the brain as well as in other biological systems, can emerge as a result of dynamic interactions that occur locally within developing structures. In the rodent somatosensory cortex, groups of neurons called “barrels” correspond to individual whiskers on the contralateral face. Barrels themselves often contain subbarrels organized into one of a few characteristic patterns. Here we demonstrate that similar patterns can be simulated by means of local growth-promoting and growth-retarding interactions within the circular domains of single barrels. The model correctly predicts that larger barrels contain more spatially complex subbarrel patterns, suggesting that the development of barrels and of the patterns within them may be understood in terms of some relatively simple dynamic processes. We also simulate the full nonlinear equations to demonstrate the predictive value of our linear analysis. Finally, we show that the pattern formation is robust with respect to the geometry of the barrel by simulating patterns on a realistically shaped barrel domain. This work shows how simple pattern forming mechanisms can explain neural wiring both qualitatively and quantitatively even in complex and irregular domains. Complex spatial patterning, common in the brain as well as in other biological systems, can emerge as a result of dynamic interactions that occur locally within developing structures. In rodent somatosensory cortex, groups of neurons called “barrels” correspond to individual whiskers on the contralateral face. Barrels themselves often contain subbarrels organized into one of a few characteristic patterns. We suggest that these so-called subbarrel patterns arise spontaneously during development through a pattern-forming instability. We use a simple chemotaxis and branching model to explain the patterns and their dependence on the size of the barrel.
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DOI:
10.1085/jgp.41.5.1049
发表时间:
1958-05-20
期刊:
The Journal of general physiology
影响因子:
--
作者:
HARTLINE HK;RATLIFF F
通讯作者:
RATLIFF F
影响因子:
2
作者:
MEINHARDT, H;KLINGLER, M
通讯作者:
KLINGLER, M
DOI:
10.1073/pnas.83.22.8779
发表时间:
1986-11-01
影响因子:
11.1
作者:
LINSKER, R
通讯作者:
LINSKER, R
影响因子:
2.5
作者:
Land, PW;Erickson, SL
通讯作者:
Erickson, SL
影响因子:
2
作者:
KELLER, EF;SEGEL, LA
通讯作者:
SEGEL, LA