diff --git a/neuron/postsynapse.md b/neuron/postsynapse.md
index 6a88f87..6831af2 100644
--- a/neuron/postsynapse.md
+++ b/neuron/postsynapse.md
@@ -37,6 +37,42 @@ Qui comprendiamo:
 
 ---
 
+**G expression**:
+```Gen
+POSTSYNAPSE
+  - bAP_ctx
+    -- Ca Influx
+    CaNDMAEnterMax: interacting 
+    CaNDMAEnterMed: interacting
+    -- Ca Clearence
+    AP-CaClearanceHigh: interacting
+    AP-CaClearanceMedium: interacting
+
+  - NOT bAP_ctx:
+    -- Ca Influx
+    CaNDMAEnterMedNotBap: interacting
+    CaNDMAEnterLow: interacting
+
+  - Fixed??
+    -- V Influx
+    VPostMax: interacting
+    VPostMed: interacting
+    VPostLow: interacting
+    -- V Clearence
+    VPostClearance: interacting
+    -- Na Clearence
+    NaClearanceHigh: interacting
+    NaClearanceLow: interacting
+
+POST-AMPA
+  - Fixed??
+    -- Na Influx
+    NaAMPAEnterMax: interacting
+    NaAMPAEnterMed: interacting
+
+```
+
+
 **Tubs:**
 
 - **Na**: Ioni entranti tramite AMPA receptors