diff --git a/Assembly-CSharp.csproj b/Assembly-CSharp.csproj
index 6b711a6..173cb6d 100644
--- a/Assembly-CSharp.csproj
+++ b/Assembly-CSharp.csproj
@@ -52,6 +52,7 @@
     <Compile Include="Assets/Scenes/Boids/Scripts/SwarmSpawner.cs" />
     <Compile Include="Assets/NanoBrain/Perceptoid.cs" />
     <Compile Include="Assets/NanoBrain/NeuroidBehaviour.cs" />
+    <Compile Include="Assets/NanoBrain/Receptor.cs" />
     <Compile Include="Assets/NanoBrain/NanoBrain.cs" />
     <Compile Include="Assets/NanoBrain/SensoryNeuroid.cs" />
     <Compile Include="Assets/NanoBrain/VisualEditor/NanoBrainComponent.cs" />
diff --git a/Assets/NanoBrain/Perception.cs b/Assets/NanoBrain/Perception.cs
index d6ee5a7..ee77960 100644
--- a/Assets/NanoBrain/Perception.cs
+++ b/Assets/NanoBrain/Perception.cs
@@ -63,7 +63,8 @@ public class Perception : Nucleus {
             if (sensoryNeuroids[i] == null)
                 availableIx = i;
             else if (sensoryNeuroids[i].receptor.thingType == thingId) {
-                sensoryNeuroids[i].receptor.position = localPosition;
+                //sensoryNeuroids[i].receptor.position = localPosition;
+                sensoryNeuroids[i].receptor.ProcessStimulus(999, localPosition);
                 return;
             }
             if (availableIx == -1) {
@@ -101,7 +102,8 @@ public class Perception : Nucleus {
                     receiver.neuroid.GetInputFrom(neuroid.velocityNeuroid);
             }
 
-            neuroid.receptor.position = localPosition;
+            //neuroid.receptor.position = localPosition;
+            neuroid.receptor.ProcessStimulus(333, localPosition);
         }
     }
 
diff --git a/Assets/NanoBrain/Perceptoid.cs b/Assets/NanoBrain/Perceptoid.cs
index bea7cce..3808936 100644
--- a/Assets/NanoBrain/Perceptoid.cs
+++ b/Assets/NanoBrain/Perceptoid.cs
@@ -127,7 +127,7 @@ public class Perceptoid : Neuroid {
         return null;
     }
 
-    public static void ProcessStimulus(NanoBrainObj brain, int thingType, Vector3 lcoalPosition) {
+    public static void ProcessStimulus(NanoBrainObj brain, int thingType, Vector3 localPosition) {
         Perceptoid selectedPerceptoid = null;
         foreach (Perceptoid nucleus in brain.perceptei) {
             if (nucleus is Perceptoid perceptoid && (thingType == 0 || perceptoid.thingType == thingType))
@@ -144,7 +144,8 @@ public class Perceptoid : Neuroid {
             Debug.Log("No perceptoid selected, stimulus is ignored");
             return;
         }
-        selectedPerceptoid.receptor.position = lcoalPosition;
+        //selectedPerceptoid.receptor.position = localPosition;
+        selectedPerceptoid.receptor.ProcessStimulus(888, localPosition);
     }
     public static Receptor GetReceptor(NanoBrainObj brain, int thingType) {
         foreach (Perceptoid perceptoid in brain.perceptei) {
diff --git a/Assets/NanoBrain/Receptor.cs b/Assets/NanoBrain/Receptor.cs
new file mode 100644
index 0000000..7c9ccc7
--- /dev/null
+++ b/Assets/NanoBrain/Receptor.cs
@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+
+public class Receptor {
+
+    public Neuroid neuroid;
+    public List<Perceptoid> perceptoids;
+
+    public int thingId;
+    public int thingType;
+    public Vector3 localPosition;
+
+    /// <summary>
+    /// Local position of the thing
+    /// </summary>
+    public virtual Vector3 position {
+        get {
+            return this.localPosition;
+        }
+        // set {
+        //     this.localPosition = value;
+        //     neuroid.UpdateState();
+        // }
+    }
+
+    public virtual void ProcessStimulus(int thingId, Vector3 localPosition) {
+        this.thingId = thingId;
+        this.localPosition = localPosition;
+        neuroid.UpdateState();
+        //perceptoids[0].UpdateState();
+    }
+}
\ No newline at end of file
diff --git a/Assets/NanoBrain/Receptor.cs.meta b/Assets/NanoBrain/Receptor.cs.meta
new file mode 100644
index 0000000..56793ae
--- /dev/null
+++ b/Assets/NanoBrain/Receptor.cs.meta
@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: cfb9734aebc3ab85aacf87d26fb92e55
\ No newline at end of file
diff --git a/Assets/NanoBrain/SensoryNeuroid.cs b/Assets/NanoBrain/SensoryNeuroid.cs
index 1cdeabb..6bfb5df 100644
--- a/Assets/NanoBrain/SensoryNeuroid.cs
+++ b/Assets/NanoBrain/SensoryNeuroid.cs
@@ -1,26 +1,36 @@
+using System.Collections.Generic;
 using System.Linq;
 using UnityEngine;
 
-public class Receptor {
+// public class Receptor {
 
-    public Neuroid neuroid;
+//     public Neuroid neuroid;
+//     public List<Perceptoid> perceptoids;
 
-    public int thingType;
-    public Vector3 localPosition;
+//     public int thingId;
+//     public int thingType;
+//     public Vector3 localPosition;
 
-    /// <summary>
-    /// Local position of the thing
-    /// </summary>
-    public virtual Vector3 position {
-        get {
-            return this.localPosition;
-        }
-        set {
-            this.localPosition = value;
-            neuroid.UpdateState();
-        }
-    }
-}
+//     /// <summary>
+//     /// Local position of the thing
+//     /// </summary>
+//     public virtual Vector3 position {
+//         get {
+//             return this.localPosition;
+//         }
+//         set {
+//             this.localPosition = value;
+//             neuroid.UpdateState();
+//         }
+//     }
+
+//     public virtual void ProcessStimulus(int thingId, Vector3 localPosition) {
+//         this.thingId = thingId;
+//         this.localPosition = localPosition;
+//         neuroid.UpdateState();
+
+//     }
+// }
 
 public class SensoryNeuroid : Neuroid {
     // A neuroid which has no neurons as input
@@ -32,6 +42,7 @@ public class SensoryNeuroid : Neuroid {
         this.name = name + ": position";
         this.receptor = new Receptor {
             neuroid = this,
+            //perceptoids[0] = this,
             thingType = thingId
         };
         this.velocityNeuroid = new(brain, name + ": velocity");
@@ -111,7 +122,7 @@ public class VelocityNeuroid : Neuroid {
             this.stale = 0;
 
             //foreach (Neuroid receiver in receivers)
-            foreach(Receiver receiver in receivers) {
+            foreach (Receiver receiver in receivers) {
                 if (receiver.nucleus is Neuroid neuroid)
                     neuroid.SetInput(this);
             }
diff --git a/Assets/NanoBrain/VisualEditor/NanoBrainObj.cs b/Assets/NanoBrain/VisualEditor/NanoBrainObj.cs
index 3d913bb..00fc89e 100644
--- a/Assets/NanoBrain/VisualEditor/NanoBrainObj.cs
+++ b/Assets/NanoBrain/VisualEditor/NanoBrainObj.cs
@@ -35,6 +35,11 @@ public class NanoBrainObj : ScriptableObject, ISerializationCallbackReceiver {
             if (nucleus.isSleeping)
                 nucleus.outputValue = Vector3.zero;
         }
+        foreach (Perceptoid perception in perceptei) {
+            perception.stale++;
+            if (perception.isSleeping)
+                perception.outputValue = Vector3.zero;
+        }
     }
 
     public void OnBeforeSerialize() {
diff --git a/Assets/Scenes/Boids/Scripts/Boid.cs b/Assets/Scenes/Boids/Scripts/Boid.cs
index 2f557be..fe2deea 100644
--- a/Assets/Scenes/Boids/Scripts/Boid.cs
+++ b/Assets/Scenes/Boids/Scripts/Boid.cs
@@ -41,9 +41,8 @@ public class Boid : MonoBehaviour {
                 Vector3 localPosition = this.transform.InverseTransformPoint(neighbour.transform.position);
                 //Debug.DrawRay(this.transform.position, this.transform.TransformDirection(localPosition), Color.magenta);
 
-                //int thingId = neighbour.GetInstanceID();
-                // nanoBrain.perception.ProcessStimulus(thingId, BoidType, localPosition, neighbour.gameObject.name);
-                boidReceptor.position = localPosition;
+                int thingId = neighbour.GetInstanceID();
+                boidReceptor.ProcessStimulus(thingId, localPosition);
             }
         }
 
@@ -52,7 +51,7 @@ public class Boid : MonoBehaviour {
             Vector3 pointOnBounds = innerBounds.ClosestPoint(point);
             Vector3 desiredWorldSpace = (pointOnBounds - point).normalized * sc.speed;
             Vector3 desiredLocalSpace = -this.transform.InverseTransformPoint(desiredWorldSpace);
-            boundaryReceptor.position = desiredLocalSpace;
+            boundaryReceptor.ProcessStimulus(777, desiredLocalSpace);
         }
 
         Vector3 worldForce = this.transform.TransformDirection(nanoBrain.root.outputValue);