20.500.12556/RUL-151177 Modeliranje in dinamika nevronskih omrežij možganske skorje Modeling and dynamics of cortical neural networks Možgani so kompleksna mreža nevronov z zelo prefinjeno delitvijo glede na svojo funkcionalnost. Ključno vlogo pri pomnjenju, pozornosti, mišljenju, govoru in zavesti nosi možganska skorja ali cerebralni korteks. Domnevno najmanjše funkcionalne enote možganske skorje so kortikalni stebri, skupki približno 10000 gosto in navidezno naključno povezanih ekscitatornih (vzbujevalnih) in inhibitornih (dušilnih) nevronov. Za modeliranje dinamike posameznih nevronov je potrebno dobro razumevanje elektrokemičnih lastnosti membrane živčnih celic. Naloga je narediti pregled modelov nevronov pri biološko smiselni izbiri parametrov, nato pa preko simulacij študirati dinamične lastnosti nevronske mreže enega kortikalnega stebra v odvisnosti od jakosti zunanjega vzbujanja in izbire modela nevronov. Iz obstoječe literature sledi, da lahko dinamiko obravnavamo preko projekcije na nizkodimenzionalni prostor. Predlagana študija je zanimiv uvod v zelo široko in intenzivno razvijajoče področje dinamike možganov. The brain is a complex neural network with highly sophisticated division according to functionality. The cerebral cortex plays a crucial role in memory, attention, thinking, speech, and consciousness. The allegedly smallest functional units of the cortex are cortical columns, bundles of about 10,000 densely and seemingly randomly connected excitatory and inhibitory neurons. Modeling the dynamics of individual neurons requires a good understanding of the electrochemical properties of nerve cell membranes. The task is to review neuron models with a biologically meaningful parameter selection, and then to study through simulations the dynamic properties of a neural network of one cortical column depending on the strength of external excitation and the choice of neuron model. From the existing literature, it follows that the dynamics can be examined through projection into a low-dimensional space. The proposed study is an interesting introduction to a very broad and intensively developing field of brain dynamics. Nevron nevronske mreže membranski potencial akcijski potencial kortikalni stebri oscilacije fazni prostor kompaktni atraktor Neuron neural networks membrane potential action potential cortical columns oscillations phase portret compact attractor true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2023-09-30 08:15:06 2023-09-30 08:15:07 2023-10-06 04:15:30 0000-00-00 00:00:00 2023 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 138262 166396163 MAG_Gartner_Matej_2023.pdf MAG_Gartner_Matej_2023.pdf 1 6D91F50B57F8E18624DD6092703E4EC4 84ef1a5fed97043bd4664fdcc3a067f72c45e900dccc516a4fe671ed4aa7e671 47441820-6370-11ee-aa25-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=176334 Fakulteta za matematiko in fiziko 0 0 0