diff --git a/elements/neuron/post_ampa.md b/elements/neuron/post_ampa.md
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+---
+include_toc: true
+---
+
+# post_ampa.md
+
+## POST-AMPA: Comprehension
+```Gen
+POST-AMPA
+  type: comprehension
+
+  expansion:
+
+  intrication:
+    # Scope
+    !DAY: INTRICATION [ ref: &ORGANISM.!DAY ]
+    !NIGHT: INTRICATION [ ref: &ORGANISM.!NIGHT ]
+
+    # Context  
+    *bAP: INTRICATION [ ref: &SOMA.*bAP ]
+
+    # Tub
+    _NT: INTRICATION [ ref: &ASTROSYNAPSE._NT ] 
+    _Na: INTRICATION [ ref: &POSTSYNAPSE._Na ] 
+    
+  instantiation:
+    $: BEHAVIOUR [ behaviour: POST-AMPA-BHE ]
+  
+```
+
+### POST-AMPA: Behaviour
+```Gen
+POST-AMPA-BHE: !DAY
+  type: behavior
+
+  within_scope: !DAY
+
+  snippet:
+    # NOT *bAP
+    @: ACCUMULATOR [ snippet: NaInAMPAMax, rf: active 2x ]
+    @: ACCUMULATOR [ snippet: NaInAMPAMed, rf: active 4x ]
+    
+```
+
+#### NOT *bAP
+
+##### NaInAMPAMax: ( active: 2x ) accumulator
+```Gen
+NaInAMPAMax
+  type: accumulator
+
+  in_context: NOT *bAP
+    hypothesis: _NT fullness
+      action: [ _Na increase ]
+      trace: 
+```
+
+##### NaInAMPAMed: ( active: 4x ) accumulator
+```Gen
+NaInAMPAMed
+  type: accumulator
+
+  in_context: NOT *bAP
+    hypothesis: _NT mediumness
+      action: [ _Na increase ]
+      trace: 
+```