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arXiv · 1609.04245

Non-random network connectivity comes in pairs

Felix Z. Hoffmann·Jochen Triesch
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Abstract

Overrepresentation of bidirectional connections in local cortical networks has been repeatedly reported and is in the focus of the ongoing discussion of non-random connectivity. Here we show in a brief mathematical analysis that in a network in which connection probabilities are symmetric in pairs, $P_{ij} = P_{ji}$, the occurrence of bidirectional connections and non-random structures are inherently linked; an overabundance of reciprocally connected pairs emerges necessarily when the network structure deviates from a random network in any form.

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Felix Z. Hoffmann, Jochen Triesch. 2016-09-14. Non-random network connectivity comes in pairs. https://arxiv.org/abs/1609.04245

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