#region dense updates
            public List<long> timeStamps = new List<long>();
            public List<float> optiFrameTime;
            public List<float[]> _motorAngles;
            public List<float[]> _smoothAngles;
            public List<float[]> _setPointAngles;
            public List<MyFrameOfMocapData> mocapFrames = new List<MyFrameOfMocapData>();
            #endregion

            #region sparse updates
            public ListRunLenEnc<sbyte[][]> grids = new ListRunLenEnc<sbyte[][]>();
            public ListRunLenEnc<bool> triggerPresses = new ListRunLenEnc<bool>();
            public ListRunLenEnc<int[]> targets = new ListRunLenEnc<int[]>();
            public ListRunLenEnc<int> HARPlevels = new ListRunLenEnc<int>();
            public ListRunLenEnc<ExperimentMode> experimentModes = new ListRunLenEnc<ExperimentMode>();
            public ListRunLenEnc<bool> resets = new ListRunLenEnc<bool>();
            #endregion