Original ResearchPublished 13 April 2026Multiscale stochastic modeling for calcium dynamics in cardiac electrophysiology: assessing whole-cell model reliability under phosphorylation and LCC downregulationGustavo Montes Novaes · Rodrigo Weber Dos Santos · Sergio Alonso · Enrique Alvarez-LacalleFrontiers in Network Physiologydoi 10.3389/fnetp.2026.1727426