Methods to Compare Predicted and Observed Phosphene Experience in tACS Subjects

Table 4

Coefficients of determination (R²) and association estimates with 95% confidence intervals for nonparametric local-linear regression model on logged current density data. All coefficients were significant (α < 0.05).

Montage	R^2	Coefficients (logged data)
		Eye	Occipital, medial wall	Occipital, remainder
Fpz-Oz, iso	0.33	−0.206 (−0.27–0.12)	0.214 (0.16, 0.27)	0.764 (0.72, 0.82)
Fpz-Oz, aniso	0.38	−0.343 (−0.45, −0.21)	0.178 (0.11, 0.23)	0.101 (0.09, 0.17)
T7-T8, iso	0.50	0.471 (0.41 0.54)	0.298 (0.24, 0.36)	−0.016 (−0.08, 0.07)
T7-T8, aniso	0.45	0.508 (0.46, 0.59)	0.222 (0.17, 0.29)	0.189 (0.16, 0.24)