How to register late RTs (late clicks) with the serial reaction time plugin

[georginatorok]

Hi everyone,
I would like to ask for some advice as I have some difficulties working out how to register late reactions in a timeline of multiple trials. In my experiment, I am using the Serial Reaction Time Mouse plugin to give participants a sequence they have to accurately follow by tapping on a touchscreen in a 4 x 4 grid. This is implemented in the “exgame_intro_tap” timeline (see code below).

var exgame_intro_tap = {
    timeline: [
      {
        type: jsPsychSerialReactionTimeMouse,
        grid: grid,
        target: jsPsych.timelineVariable('target'), 
        target_image: frogs_small[6],
        pre_target_duration: pre_targ_dur,
        trial_duration: trial_dur,
        grid_square_size: square_size,
        prompt: catchfrog,
        allow_nontarget_responses: true,
        data: {
        task: 'sequence', game: 'example_tapping', phase: 'intro', gamePhase: 'exgamefam',
        color: frogs_small[6].slice(frogs_small[6].search('frog')+5, frogs_small[6].search('small')-1),
        condition: "intro", seqID: 'exgame_intro_tap', trial_no: jsPsych.timelineVariable('trial_no')
        }
      },
  ],
  timeline_variables: [
      { target: ex_game[0], trial_no: 1},
      { target: ex_game[1], trial_no: 2},
      { target: ex_game[2], trial_no: 3},
      { target: ex_game[3], trial_no: 4},
      { target: ex_game[4], trial_no: 5},
      { target: ex_game[5], trial_no: 6}
  ],

  on_timeline_finish: function(data) {
      var correct_count = jsPsych.data.get().filter({seqID: 'exgame_intro_tap', correct: true}).trials;
      accuracy_exgame_intro_tap = correct_count.length;
      console.log('The accuracy of the example game was:', accuracy_exgame_intro_tap, ' out of 6 hits');
      
      jsPsych.data.addProperties({
        accuracy: accuracy_exgame_intro_tap
      });
    },

};

Is there a way to change this SRT plugin so that RTs of late clicks are also recorded in the data file?

Now when a participant taps late for target t=1, but before the t=2 target appears (ie., the grid is empty during the inter-trial interval), I have no RT. I would like to know how (a)synchronous with the sequence people's tapping actions are.

In the plugin file, to achieve this, would I need to change something in this part?

// function to handle responses by the subject
          function after_response(info) {
              // only record first response
              response = response.rt == null ? info : response;
              if (trial.response_ends_trial) {
                  endTrial();
              }
          }

or earlier, in the "const showTarget = () => { ... } " block?

Apologies if this is a complex question, but if someone could give me some advice on whether this is possible, and if yes, how to do it, that would be very helpful.

Best,
Georgina