var calibration = {
  timeline: [
    {
      type: jsPsychHtmlKeyboardResponse,
      stimulus: `<div style="width:200px; height: 200px; background: white;"></div>`,
      trial_duration: 200,
      post_trial_gap: 100,
    },
  ],
  loop_function: (data) => {
    if (data.values()[0].response == " ") {
      return false;
    } else {
      return true;
    }
  },
};