Add a wait before the run officially starts (i.e. for dummy scans)

visigoth/experiment.py

@@ -60,6 +60,12 @@ def run(self):
 
             # TODO need to add scanner trigger/dummy scans
 
+            # Wait a certain amount of time before starting the run
+            # (e.g. for dummy fMRI scans)
+            # TODO add a countdown or something nice here
+            self.wait_until(self.check_abort,
+                            timeout=self.p.wait_pre_run)
+
             # Initialize the experimental run
             self.clock.reset()
             self.tracker.start_run()
@@ -799,6 +805,8 @@ def iti_end(self, iti_duration, check_abort=True):
     eye_target_wait=.5,
     eye_target_hold=.25,
 
+    wait_pre_run=0,
+
     wait_iti=1,
     wait_fix=5,
     wait_resp=5,