diff --git a/Assets/NanoBrain/ClusterInstance.cs b/Assets/NanoBrain/ClusterInstance.cs
index e54254d..1dbb40d 100644
--- a/Assets/NanoBrain/ClusterInstance.cs
+++ b/Assets/NanoBrain/ClusterInstance.cs
@@ -38,12 +38,15 @@ public class ClusterInstance : INucleus {
 
     #region Synapses
 
-    private Synapse[] _synapses = new Synapse[0];
+    [SerializeReference]
+    private List<Synapse> _synapses = new();
     public List<Synapse> synapses => new(_synapses);
 
     public Synapse AddSynapse(IReceptor sendingNucleus, string nucleusName = null) {
         if (nucleusName == null) {
-            this.asset.inputs[0].AddSynapse(sendingNucleus);
+            Synapse synapse = new(sendingNucleus);
+            this._synapses.Add(synapse);
+            // Nice, but this is not yet connected to the nucleusName
         } else {
             INucleus receptor = (INucleus)this.asset.nuclei.Find(nucleus => nucleus is INucleus n && nucleus.name == nucleusName);
             receptor.AddSynapse(sendingNucleus);
diff --git a/Assets/NanoBrain/Neuron.cs b/Assets/NanoBrain/Neuron.cs
index ff14d0c..df4e965 100644
--- a/Assets/NanoBrain/Neuron.cs
+++ b/Assets/NanoBrain/Neuron.cs
@@ -142,7 +142,7 @@ public class Neuron : INucleus {
         get { return _outputValue; }
         set {
             this.stale = 0;
-            this._isSleeping = false;
+            // this._isSleeping = false;
             _outputValue = value;
         }
     }
@@ -150,14 +150,16 @@ public class Neuron : INucleus {
     [NonSerialized]
     private int stale = 1000;
 
-    private bool _isSleeping = false;
-    public bool isSleeping => _isSleeping;
+    // private bool _isSleeping = false;
+    // public bool isSleeping => _isSleeping;
+    public bool isSleeping => lengthsq(this.outputValue) == 0;
     public float lastTime { get; private set; }
 
     public void UpdateNuclei() {
         this.stale++;
-        this._isSleeping = this.stale > 2;
-        if (isSleeping)
+        // this._isSleeping = this.stale > 2;
+        // if (isSleeping)
+        if (this.stale >  2)
             _outputValue = Vector3.zero;
     }
 
diff --git a/Assets/NanoBrain/VisualEditor/Editor/ClusterInspector.cs b/Assets/NanoBrain/VisualEditor/Editor/ClusterInspector.cs
index cd4d6c7..f44105d 100644
--- a/Assets/NanoBrain/VisualEditor/Editor/ClusterInspector.cs
+++ b/Assets/NanoBrain/VisualEditor/Editor/ClusterInspector.cs
@@ -371,6 +371,11 @@ public class ClusterInspector : Editor {
         }
 
         private void DrawNucleus(IReceptor nucleus, Vector3 position, float maxValue, float size, Color color) {
+            if (nucleus is MemoryCell memory) {
+                Handles.color = Color.white;
+                Handles.DrawWireDisc(position + Vector3.right * 10, Vector3.forward, size);
+            }
+
             Handles.color = color;
             Handles.DrawSolidDisc(position, Vector3.forward, size);
 
@@ -489,8 +494,6 @@ public class ClusterInspector : Editor {
                 this.currentNucleus.name = EditorGUILayout.TextField(this.currentNucleus.name);
                 if (this.currentNucleus is Neuron neuroid) {
                     if (this.currentNucleus is MemoryCell memory) {
-                        // should use serializedProperty
-                        memory.deltaValue = EditorGUILayout.Toggle("DeltaValue", memory.deltaValue);
                     }
                     else {
                         EditorGUILayout.BeginHorizontal();
@@ -652,8 +655,8 @@ public class ClusterInspector : Editor {
                 //     Nucleus n = this.currentNucleus.brain.nuclei[selectedIndex - perceptei.Count()];
                 //     n.AddReceiver(this.currentNucleus);
                 // }
-                IReceptor n = cluster.nuclei[selectedIndex];
-                n.AddReceiver(this.currentNucleus);
+                IReceptor receptor = cluster.nuclei[selectedIndex];
+                receptor.AddReceiver(this.currentNucleus);
             }
         }