2023 Okt\u00f3ber 27, 10:30 \u00f3ra, 3\/II-es terem<\/p>\n\n\n\n
In this talk, I discuss critical dynamics of simple nonequilibrium models
on large connectomes, obtained by diffusion MRI, representing the white
matter of the human brain; as well as on the neuron level fruit-fly
connectome. First I overview graph theoretical and topological analysis of
these networks, pointing out that universality allows selecting a
representative human network, the KKI-18, which has been used for
dynamical simulations [1].
The critical and sub-critical behaviour of simple, two- or three-state
threshold models is discussed with special emphasis on rare-region effects
leading to robust Griffiths phases (GP) [2-3].
Numerical results of synchronization phenomena, studied by Kuramoto-type
models, are also shown, leading to a continuous analog of the GP, termed
as “frustrated synchronization” [4-5]. The models presented here exhibit
dynamical scaling behaviour, with exponents in agreement with brain
experimental data if local homeostasis is provided [6].
I provide a comparison of the results about criticality obtained for the
human and fruit-fly connecomes in the rest and task states [7-8].<\/p>\n\n\n\n
[1] M. T. Gastner, G. \\’Odor, {\\it Sci. Rep..} {\\bf 6}, 27249 (2016).
[2] G. \\’Odor, {\\it Phys. Rev. E} {\\bf 94}, 062411 (2016).
[3] G. \\’Odor, {\\it Phys. Rev. E} {\\bf 99}, 012113 (2019).
[4] G. \\’Odor, J. Kelling {\\it Sci. Rep.} {\\bf 99}, 19621 (2019).
[5] G. \\’Odor, J. Kelling, G. Deco, {\\it Neurocomputing}, {\\bf 426}, 696 (2021).
[6] G. \\’Odor, M. T. Gastner, J. Kelling, G. Deco, {\\it J. Phys. Compl.} {\\bf 2}, 045002 (2021).
[7] G. \\’Odor, J. Kelling, G. Deco, {\\it Phys. Rev. Res.}, {\\bf 2}, 023057 (2022).
[8] G. \\’Odor, I. Papp, S. Deng and J. Kelling, {\\it Front. Phys.} {\\bf 11} 1150246 (2023).<\/p>\n","protected":false},"excerpt":{"rendered":"
2023 Okt\u00f3ber 27, 10:30 \u00f3ra, 3\/II-es terem<\/p>\n","protected":false},"author":2,"featured_media":2271,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"wpupg_custom_link":[],"wpupg_custom_link_behaviour":[],"wpupg_custom_link_nofollow":[],"wpupg_custom_image":[],"wpupg_custom_image_id":[],"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2269","post","type-post","status-archive","format-standard","has-post-thumbnail","hentry","category-archivum"],"featured_image_src":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-content\/uploads\/2023\/10\/mafiplakatOdor2023okt27-scaled-e1698468359797.jpg","author_info":{"display_name":"S\u00e1ndor Borb\u00e9ly","author_link":"https:\/\/atom.ubbcluj.ro\/fizika\/author\/sandor-borbely\/"},"_links":{"self":[{"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/posts\/2269","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/comments?post=2269"}],"version-history":[{"count":4,"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/posts\/2269\/revisions"}],"predecessor-version":[{"id":2941,"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/posts\/2269\/revisions\/2941"}],"wp:attachment":[{"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/media?parent=2269"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/categories?post=2269"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/atom.ubbcluj.ro\/fizika\/wp-json\/wp\/v2\/tags?post=2269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}