diff --git a/organs/tectum/tectum.md b/organs/tectum/tectum.md
index 18b0be4..f79e1ef 100644
--- a/organs/tectum/tectum.md
+++ b/organs/tectum/tectum.md
@@ -6,6 +6,7 @@ Qui comprendiamo il collegamento fra moduli tipo winnertakeall che mettono a dis
 
 Expansions and modulations:
   - is expanded by: [ORGANISM](../../organism.md)
+  - expands: IN_EXCITATION, OUT_EXCITATION, IN_INHIBITION, OUT_INHIBITION, EXCITATION, INHIBITION
   - tunes: [PRESYNAPSE](../../elements/neuron/presynapse.md), [POSTSYNAPSE](../../elements/neuron/postsynapse.md), [ASTROSYNAPSE](../../elements/astrocyte/astrosynapse.md)
 
 ```Gen