====== Population matfile format ======

For example:

<code matlab>
load('Y:\Projects\Simultaneous_dPul_PPC_recordings\ephys\dPul_LIP_Lin_20211109\population_Linus_20211109.mat');

population(1).trial(6)

ans = 

  struct with fields:

                type: 4
            effector: 0
          reach_hand: 0
              choice: 1
             success: 1
             fix_pos: 2.0000 + 0.0000i
             tar_pos: -13.0000 + 0.0000i % selected target position
    trial_onset_time: 34.3180
        states_onset: [-0.5432 0 0.0164 1.0167 1.3329 2.1342 2.3496 2.7506 2.7677 3.2340 2.3210 2.3610 2.7506 4.9227]
                date: 20211109
               block: 1
                 run: 1 
                   n: 7 % original trial number in behavioral monkeypsych mat file
           completed: 1
             sac_off: -0.1680 + 0.2490i
             sac_lat: 0.1870
             rea_off: NaN +  NaNi
             rea_lat: NaN
             cue_pos: NaN
           cue_shape: NaN
         all_tar_pos: [2×1 double]
             col_dim: [2×3 double]
             col_bri: [2×3 double]
     target_selected: 2
              states: [1 2 3 6 8 4 5 20 21 50 60 61 90 98]
      run_onset_time: 40342
       arrival_times: [96×1 single] % aligned to the same time as states_onset, to state 2
             dataset: 80
        perturbation: 0
          FR_average: 29.1457
            accepted: 1
                  FR: 25.3556
                  
</code>