Evoked response activity eigenmode analysis in a convoluted cortex via neural field theory
| Autor: | J. C. Pagès, Xiao Gao, Natasha C. Gabay, K. N. Mukta, Peter A. Robinson |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Cerebral Cortex
Physics genetic structures Quantitative Biology::Neurons and Cognition Models Neurological Mathematical analysis Electroencephalography Neural fields Impulse (physics) Eigenfunction Stimulus (physiology) 01 natural sciences 010305 fluids & plasmas medicine.anatomical_structure Thalamus Normal mode Cortex (anatomy) 0103 physical sciences medicine 010306 general physics Evoked Potentials |
| Zdroj: | Physical Review E. 102 |
| ISSN: | 2470-0053 2470-0045 |
| Popis: | Neural field theory of the corticothalamic system is used to explore evoked response potentials (ERPs) caused by spatially localized impulse stimuli on the convoluted cortex and on a spherical cortex. Eigenfunctions are calculated analytically on the spherical cortex and numerically on the convoluted cortex via eigenfunction expansions. Eigenmodes on a convoluted cortex are similar to those of the spherical cortex, and a few such modes are found to be sufficient to reproduce the main ERP features. It is found that the ERP peak is stronger in spherical cortex than convoluted cortex, but in both cases the peak decreases monotonically with increasing distance from the stimulus point. In the convoluted case, cortical folding causes ERPs to differ between locations at the same distance from the stimulus point and spherical symmetries are only approximately preserved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|