TY - JOUR
T1 - The effects of neuron heterogeneity and connection mechanism in cortical networks
AU - Zhao, Qingbai
AU - Tang, Yiyuan
AU - Feng, Hongbo
AU - Li, Changjun
AU - Sui, Danni
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China under Grant No. (30670699) and Ministry of Education (NCET-06-0277).
PY - 2008/10/1
Y1 - 2008/10/1
N2 - The mammalian cortices show an specific architecture close to the optimum, represented by the high clustering, short processing steps and short wiring length. What are the key factors that influence the layout of neural connectivity networks? Here a model to investigate the conditions leading to the small-world cortical networks with minimal global wiring is presented. The essential factors in this model are the introductions of the unequal number distribution of heterogeneous neurons and two connection mechanisms, the preferential attachment to neurons with large spatial coverage (PANLSC) and distance preference. Outcomes show that the specific architecture close to the optimum can only result from the PANLSC when the number distribution of neurons with diverse spatial coverage is highly unequal. This suggests the PANLSC may be an important connection mechanism in cortical systems.
AB - The mammalian cortices show an specific architecture close to the optimum, represented by the high clustering, short processing steps and short wiring length. What are the key factors that influence the layout of neural connectivity networks? Here a model to investigate the conditions leading to the small-world cortical networks with minimal global wiring is presented. The essential factors in this model are the introductions of the unequal number distribution of heterogeneous neurons and two connection mechanisms, the preferential attachment to neurons with large spatial coverage (PANLSC) and distance preference. Outcomes show that the specific architecture close to the optimum can only result from the PANLSC when the number distribution of neurons with diverse spatial coverage is highly unequal. This suggests the PANLSC may be an important connection mechanism in cortical systems.
KW - Cortical network
KW - Global wiring
KW - Optimal architecture
KW - Preferential attachment
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U2 - 10.1016/j.physa.2008.07.002
DO - 10.1016/j.physa.2008.07.002
M3 - Article
AN - SCOPUS:48649092254
SN - 0378-4371
VL - 387
SP - 5952
EP - 5957
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
IS - 23
ER -