Power-law for axon diameters at branch point.
Power-law for axon diameters at branch point.
复制标题
分支点轴突直径的幂律。
DOI:
10.1186/1471-2202-4-18
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发表时间:
2003-08-28
期刊:
影响因子:
2.4
通讯作者:
Stepanyants, A
中科院分区:
文献类型:
--
作者:
Chklovskii, DB;Stepanyants, A
Axon calibers vary widely among different animals, neuron classes, and even within the same neuron. What determines the diameter of axon branches? We pursue the hypothesis that the axon caliber has evolved to minimize signal propagation delays, while keeping arbor volume to a minimum. For a general cost function, we show that the optimal diameters of mother and daughter branches at a bifurcation satisfy a power law. The derivation relies on the fact that the axon conduction speed scales as a power of axon diameter. Although available data are consistent with the law, there is a large spread in the data. Future experimental tests will determine whether this spread is due to biological variability or measurement error. Minimization of arbor volume and signal propagation delay may have been an important factor in the evolution of the brain.
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DOI:
10.1085/jgp.10.5.725
发表时间:
1927-05-20
期刊:
The Journal of general physiology
影响因子:
--
作者:
Murray CD
通讯作者:
Murray CD
影响因子:
--
作者:
Hursh, JB
通讯作者:
Hursh, JB
影响因子:
5.5
作者:
ADAL, MN;BARKER, D
通讯作者:
BARKER, D
影响因子:
5.5
作者:
HODGKIN, AL
通讯作者:
HODGKIN, AL
影响因子:
2.4
作者:
Cherniak, C;Changizi, M;Kang, DW
通讯作者:
Kang, DW