diff --git a/ratinabox/Neurons.py b/ratinabox/Neurons.py
index 20c45cc..b3f7c8a 100644
--- a/ratinabox/Neurons.py
+++ b/ratinabox/Neurons.py
@@ -1826,7 +1826,7 @@ def bvc_rf(theta, r, mu_r=0.5, sigma_r=0.2, mu_theta=0.5, sigma_theta=0.1):
 
         for i, n in enumerate(chosen_neurons):
             mu_r = self.tuning_distances[n]
-            sigma_r = self.sigma_angles[n]
+            sigma_r = self.sigma_distances[n] 
             mu_theta = self.tuning_angles[n]
             sigma_theta = self.sigma_angles[n]
             receptive_field = bvc_rf(