Script that uses HTC Vive cam position to set position of Perception Neuron in Unity.

VrPosSync.cs

using UnityEngine;

public class VrPosSync : MonoBehaviour {
    public Transform viveCamEye;
    public Transform neuronHead;
    public Transform neuronPelvis;
	
	void LateUpdate () {
        Vector3 headPelvisOffset = neuronHead.position - neuronPelvis.position;
        neuronPelvis.position = viveCamEye.position - headPelvisOffset;

    }
}