diff --git a/src/schema/objects/columns.yaml b/src/schema/objects/columns.yaml
index c37735fe9f..36511325d2 100644
--- a/src/schema/objects/columns.yaml
+++ b/src/schema/objects/columns.yaml
@@ -110,14 +110,6 @@ channel:
     In the absence of a delimiter, tools MUST interpret any character as being part
     of a channel name.
   type: string
-channel_label:
-  name: channel_label
-  display_name: Channel label
-  description: |
-    Human readable identifier. Use this name to specify the
-    content of signals not generated by electrodes. For example,
-    `DAQ internal synchronization signals`, `behavioral signals`, `behavioral cues`.
-  type: string
 color:
   name: color
   display_name: Color label
diff --git a/src/schema/rules/tabular_data/microephys.yaml b/src/schema/rules/tabular_data/microephys.yaml
index bc674a706a..2d6f00ec84 100644
--- a/src/schema/rules/tabular_data/microephys.yaml
+++ b/src/schema/rules/tabular_data/microephys.yaml
@@ -126,9 +126,15 @@ microephysChannels:
     high_cutoff: optional
     reference__microephys: optional
     notch: optional
-    channel_label: optional
     stream_id: optional
-    description: optional
+    description:
+      level: optional
+      description_addendum: |
+        For a channel that is not generated by an electrode, and so has `n/a` in the
+        `electrode_name` column, use this column to state what the signal is,
+        for example, `Synchronization pulse from the behavioral control system`.
+        The category of such a channel is given by the `type` column,
+        for example, `SYNC` or `BEH`.
     software_filter_types: optional
     status: optional
     status_description: optional