text: // ===================================================================
  // NEURON
  // -------------------------------------------------------------------
  // Representation of a pyramidal neuron.
  // -------------------------------------------------------------------
  class Neuron {
    constructor(px, py, pz, id) {
      this.id = id;
      this.pos = { x: px, y: py, z: pz };
      this.predicted = false;
      this.activated = false;
      this.distNodes = new Set();
      this.distPerms = new Map();
    }
    initDistalSynapes(layer) {
    }
  };
  