fix to boris events

main.py

@@ -960,15 +960,50 @@ class UpdateEventsWindow(QWidget):
             durations = []
             descriptions = []
 
+            label_counts = {}
+
+            used_times = set()
+            
+            sfreq = raw.info['sfreq']  # sampling frequency in Hz
+            min_shift = 1.0 / sfreq
+            
+            max_attempts = 10
+            
             for event in boris_events:
                 if not isinstance(event, list) or len(event) < 3:
                     continue
+
                 orig_time = event[0]
                 desc = event[2]
+
+                # Count occurrences per event label
+                count = label_counts.get(desc, 0)
+                label_counts[desc] = count + 1
+
+                # Only use 1st, 3rd, 5th... (odd occurrences)
+                if (count % 2) == 0:
                     shifted_time = orig_time + time_shift
 
-                onsets.append(shifted_time)
-                durations.append(0.0)  # durations shouldn't matter?
+                    # Ensure unique timestamp by checking and adjusting slightly
+                    adjusted_time = shifted_time
+
+                    # Try to find a unique timestamp
+                    attempts = 0
+                    while round(adjusted_time, 6) in used_times and attempts < max_attempts:
+                        adjusted_time += min_shift
+                        attempts += 1
+
+                    if attempts == max_attempts:
+                        print(f"Warning: Could not find unique timestamp for event '{desc}' at original time {orig_time:.3f}s. Skipping.")
+                        continue  # Skip problematic event
+
+                    adjusted_time = round(adjusted_time, 6)
+                    used_times.add(adjusted_time)
+
+                    print(f"Applying event: {desc} @ {adjusted_time:.3f}s (original: {orig_time:.3f}s)")
+
+                    onsets.append(adjusted_time)
+                    durations.append(0.0)
                     descriptions.append(desc)
 
             new_annotations = Annotations(onset=onsets, duration=durations, description=descriptions)