diff --git a/src/schema/meta/associations.yaml b/src/schema/meta/associations.yaml
index 503fa728c1..ee2320585e 100644
--- a/src/schema/meta/associations.yaml
+++ b/src/schema/meta/associations.yaml
@@ -82,6 +82,15 @@ channels:
     extension: .tsv
   inherit: true
 
+electrodes:
+  selectors:
+    - intersects([suffix], ['eeg', 'ieeg', 'meg'])
+    - extension != '.json'
+  target:
+    suffix: electrodes
+    extension: .tsv
+  inherit: true
+
 coordsystem:
   selectors:
     - intersects([suffix], ['eeg', 'ieeg', 'meg', 'nirs', 'motion', 'electrodes', 'optodes'])
diff --git a/src/schema/meta/context.yaml b/src/schema/meta/context.yaml
index 8783b46371..8deb853cc2 100644
--- a/src/schema/meta/context.yaml
+++ b/src/schema/meta/context.yaml
@@ -269,6 +269,15 @@ properties:
             type: array
             items:
               type: string
+      electrodes:
+        description: 'Electrodes file'
+        type: object
+        required: [path]
+        additionalProperties: false
+        properties:
+          path:
+            description: 'Path to associated electrodes file'
+            type: string
       coordsystem:
         description: 'Coordinate system file'
         type: object
diff --git a/src/schema/rules/checks/ieeg.yaml b/src/schema/rules/checks/ieeg.yaml
new file mode 100644
index 0000000000..1a60e35de0
--- /dev/null
+++ b/src/schema/rules/checks/ieeg.yaml
@@ -0,0 +1,14 @@
+---
+iEEGElectrodesRequired:
+  issue:
+    code: IEEG_ELECTRODES_REQUIRED
+    message: |
+      iEEG data files must have an associated electrodes.tsv.
+      A single electrodes file may apply to multiple data files
+      via the inheritance principle.
+    level: error
+  selectors:
+    - suffix == "ieeg"
+    - extension != ".json"
+  checks:
+    - associations.electrodes.path != ""