diff --git a/elements/neuron/appunti/2026-07-06-logic-principles-of-the-expresion_v5.md b/elements/neuron/appunti/2026-07-06-logic-principles-of-the-expresion_v5.md
index 5c23a6b..fd3a5b9 100644
--- a/elements/neuron/appunti/2026-07-06-logic-principles-of-the-expresion_v5.md
+++ b/elements/neuron/appunti/2026-07-06-logic-principles-of-the-expresion_v5.md
@@ -291,6 +291,29 @@ in any component; it is what happens when many primed components ignite each oth
 thresholds. Holism is enacted by the coupling and read off by us as observers — it is never encoded
 in a part, because if it were, that part would be the system, and there is no system.
 
+**A component cannot be contextualized by a context it emits — so initiators self-trigger.** A
+*context* is a signal one component emits for others to read (a spike delivered or not, a train
+present or not). Locality has a consequence for contexts that is easy to miss: a component cannot
+consume its own emission as its context. It would be reading its own interior, which locality forbids;
+and it is circular — a component that fires does not need to be told it fired, it *is* the firing. So
+what a component emits (the soma emits AP and REFRACTORY) is its *output*, never its own context. This
+splits components in two:
+
+- A **responder** (the spine, the perisynaptic process, the relays) has a deed that is a *response to
+  an arrival*, so an external context licenses even its ACTION: glutamate present, a spike arriving.
+  It consumes a context to act.
+- An **initiator** (the soma) fires from *its own* integration crossing *its own* threshold. Nothing
+  external licenses its action; it runs continuously and the alternation between acting and recovering
+  is decided by its internal condition. It emits its phases (AP, REFRACTORY) as contexts *for others*,
+  and cannot itself be contextualized by them, since it is their source.
+
+So the emission structure is the inverse of the consumption structure: initiators generate the
+contexts that responders consume. And one category is exempt from this split — PREPARATION always
+faces outward and upward, toward the next act and the other scope, so even an initiator is
+externally contextualized *for its preparation* (the neuron, tracking the sustained absence of soma
+spikes that the soma cannot know from inside, emits the quiet context that licenses it). A component
+self-triggers its own deed; it is told, from above, only when it has been idle long enough to prepare.
+
 ---
 
 ## 2. The Ring — One Act in Three Phases