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Schmitt O, Eipert P, Philipp K, et al. The intrinsic connectome of the rat amygdala. Front Neural Circuits. 2012;6:81doi: 10.3389/fncir.2012.00081.
Schmitt, O., Eipert, P., Philipp, K., Kettlitz, R., Fuellen, G., & Wree, A. (2012). The intrinsic connectome of the rat amygdala. Frontiers in neural circuits, 681. https://doi.org/10.3389/fncir.2012.00081
Schmitt, Oliver, et al. "The intrinsic connectome of the rat amygdala." Frontiers in neural circuits vol. 6 (2012): 81. doi: https://doi.org/10.3389/fncir.2012.00081
Schmitt O, Eipert P, Philipp K, Kettlitz R, Fuellen G, Wree A. The intrinsic connectome of the rat amygdala. Front Neural Circuits. 2012 Dec 11;6:81. doi: 10.3389/fncir.2012.00081. eCollection 2012. PMID: 23248583; PMCID: PMC3518970.
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Front Neural Circuits. 2012 Dec 11;6:81. doi: 10.3389/fncir.2012.00081. eCollection 2012.

The intrinsic connectome of the rat amygdala.

Frontiers in neural circuits

Oliver Schmitt, Peter Eipert, Konstanze Philipp, Richard Kettlitz, Georg Fuellen, Andreas Wree

Affiliations

  1. Department of Anatomy, University of Rostock Rostock, Germany.

PMID: 23248583 PMCID: PMC3518970 DOI: 10.3389/fncir.2012.00081

Abstract

The connectomes of nervous systems or parts there of are becoming important subjects of study as the amount of connectivity data increases. Because most tract-tracing studies are performed on the rat, we conducted a comprehensive analysis of the amygdala connectome of this species resulting in a meta-study. The data were imported into the neuroVIISAS system, where regions of the connectome are organized in a controlled ontology and network analysis can be performed. A weighted digraph represents the bilateral intrinsic (connections of regions of the amygdala) and extrinsic (connections of regions of the amygdala to non-amygdaloid regions) connectome of the amygdala. Its structure as well as its local and global network parameters depend on the arrangement of neuronal entities in the ontology. The intrinsic amygdala connectome is a small-world and scale-free network. The anterior cortical nucleus (72 in- and out-going edges), the posterior nucleus (45), and the anterior basomedial nucleus (44) are the nuclear regions that posses most in- and outdegrees. The posterior nucleus turns out to be the most important nucleus of the intrinsic amygdala network since its Shapley rate is minimal. Within the intrinsic amygdala, regions were determined that are essential for network integrity. These regions are important for behavioral (processing of emotions and motivation) and functional (memory) performances of the amygdala as reported in other studies.

Keywords: amygdala; connectome; network analysis; rat brain; simulation; stereotaxic atlas; tract-tracing; visualization

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