Changes in (A) T2, (B) PSR, and (C) kmf of SH-SY5Y cells across experimental conditions: [K+] = 0.2–80 mM (blue cross) and [Ba2+] = 10 mM (green triangle), compared to the control condition (black cross). Data from fifteen experiments (n = 15) are displayed. Linear regression lines for [K+] data (blue solid line) and [Ba2+] data (green solid line) are drawn along with dotted lines representing 95% confidence intervals. Error bars denote standard deviation. Statistical significance of changes in MR parameters with [Ba2+] = 10 mM is marked with asterisks (ns: p > 0.05, *: p < 0.05, **: p < 0.01, ***: p < 0.001).