diff --git a/api/nodes/signal_config.proto b/api/nodes/signal_config.proto
index 7e79903..09bc3f2 100644
--- a/api/nodes/signal_config.proto
+++ b/api/nodes/signal_config.proto
@@ -6,8 +6,9 @@ package synapse;
 
 message ElectrodeConfig {
     repeated Channel channels = 1;
-    float low_cutoff_hz = 2;
-    float high_cutoff_hz = 3;
+    reserved 2, 3;
+    float low_pass_corner_hz = 4;
+    float high_pass_corner_hz = 5;
 }
 
 message PixelConfig {
diff --git a/api/nodes/spectral_filter.proto b/api/nodes/spectral_filter.proto
index b20d5a5..5f7bf68 100644
--- a/api/nodes/spectral_filter.proto
+++ b/api/nodes/spectral_filter.proto
@@ -12,6 +12,7 @@ enum SpectralFilterMethod {
 
 message SpectralFilterConfig {
   SpectralFilterMethod method = 1;
-  float low_cutoff_hz = 2;
-  float high_cutoff_hz = 3;
+  reserved 2, 3;
+  float low_pass_corner_hz = 4;
+  float high_pass_corner_hz = 5;
 }