diff --git a/elements/neuron/postsynapse.md b/elements/neuron/postsynapse.md
index 5d09e61..b65dfe5 100644
--- a/elements/neuron/postsynapse.md
+++ b/elements/neuron/postsynapse.md
@@ -95,19 +95,27 @@ TunPossible_ctx
 
 ```Gen
 POSTSYNAPSE
- type: container
+ type: comprehension
 
  expansion: 
-  - POST-AMPA ( full: 10x, active: 5x, empty: 2x )
+  @: POST-AMPA [ full: 10x, active: 5x, empty: 2x ]
    # modulated_by: TUN-POST-IC # possible/actual
-  - POST-NA-CLEAR ( full: 1x, active: 1x, empty: 0x )
+  @: POST-NA-CLEAR [ full: 1x, active: 1x, empty: 0x ]
    # modulated_by: ??
+  @POSTSYNAPSE-BEH: POSTSYNAPSE-BEH []
+```
 
- tub_local:
-  - Ca2+ ( full: 60x, active: 30x, empty: 0x )
-  - Na ( full: 60x, active: 30x, empty: 0x )
-  - Nox ( full: 100x, active: 20x, empty: 0x ) # Nitric Oxide (NO):  A gas that diffuses freely.
-  - eCB ( full: 100x, active: 20x, empty: 0x ) # Endocannabinoids (e.g., 2-AG)
+POSTSYNAPSE-BEH
+
+  type: container
+
+  activity_scope: !DAY
+
+  tub_local:
+    - Ca2+ ( full: 60x, active: 30x, empty: 0x )
+    - Na ( full: 60x, active: 30x, empty: 0x )
+    - Nox ( full: 100x, active: 20x, empty: 0x ) # Nitric Oxide (NO):  A gas that diffuses freely.
+    - eCB ( full: 100x, active: 20x, empty: 0x ) # Endocannabinoids (e.g., 2-AG)
 
  tub_intricated:
   - NT ( contained_by: SYNAPSE )