diff --git a/synthetic/code/create_synthethic_ds.sh b/synthetic/code/create_synthethic_ds.sh
old mode 100644
new mode 100755
index af4464a5d..0de374131
--- a/synthetic/code/create_synthethic_ds.sh
+++ b/synthetic/code/create_synthethic_ds.sh
@@ -16,16 +16,17 @@ create_raw_beh() {
     ses=$3
 
     suffix='_beh'
-    task_name='stroop'
 
     this_dir=${target_dir}/sub-${subject}/ses-${ses}/beh
 
     mkdir -p ${this_dir}
 
-    filename=${this_dir}/sub-${subject}_ses-${ses}_task-${task_name}${suffix}.tsv
-    echo -e "trial\tresponse\treaction_time\tstim_file" >${filename}
-    echo -e "congruent\tred\t1.435\timages/word-red_color-red.jpg" >>${filename}
-    echo -e "incongruent\tred\t1.739\timages/word-red_color-blue.jpg" >>${filename}
+    for task_name in stroop+whitebg stroop+blackbg; do
+        filename=${this_dir}/sub-${subject}_ses-${ses}_task-${task_name}${suffix}.tsv
+        echo -e "trial\tresponse\treaction_time\tstim_file" >${filename}
+        echo -e "congruent\tred\t1.435\timages/word-red_color-red.jpg" >>${filename}
+        echo -e "incongruent\tred\t1.739\timages/word-red_color-blue.jpg" >>${filename}
+    done
 }
 
 # RAW DATASET
diff --git a/synthetic/sub-01/ses-01/beh/sub-01_ses-01_task-stroop_beh.tsv b/synthetic/sub-01/ses-01/beh/sub-01_ses-01_task-stroop+blackbg_beh.tsv
similarity index 100%
rename from synthetic/sub-01/ses-01/beh/sub-01_ses-01_task-stroop_beh.tsv
rename to synthetic/sub-01/ses-01/beh/sub-01_ses-01_task-stroop+blackbg_beh.tsv
diff --git a/synthetic/sub-02/ses-01/beh/sub-02_ses-01_task-stroop_beh.tsv b/synthetic/sub-01/ses-01/beh/sub-01_ses-01_task-stroop+whitebg_beh.tsv
similarity index 100%
rename from synthetic/sub-02/ses-01/beh/sub-02_ses-01_task-stroop_beh.tsv
rename to synthetic/sub-01/ses-01/beh/sub-01_ses-01_task-stroop+whitebg_beh.tsv
diff --git a/synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop_beh.tsv b/synthetic/sub-02/ses-01/beh/sub-02_ses-01_task-stroop+blackbg_beh.tsv
similarity index 100%
rename from synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop_beh.tsv
rename to synthetic/sub-02/ses-01/beh/sub-02_ses-01_task-stroop+blackbg_beh.tsv
diff --git a/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop_beh.tsv b/synthetic/sub-02/ses-01/beh/sub-02_ses-01_task-stroop+whitebg_beh.tsv
similarity index 100%
rename from synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop_beh.tsv
rename to synthetic/sub-02/ses-01/beh/sub-02_ses-01_task-stroop+whitebg_beh.tsv
diff --git a/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop_beh.tsv b/synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop+blackbg_beh.tsv
similarity index 100%
rename from synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop_beh.tsv
rename to synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop+blackbg_beh.tsv
diff --git a/synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop+whitebg_beh.tsv b/synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop+whitebg_beh.tsv
new file mode 100644
index 000000000..655289e92
--- /dev/null
+++ b/synthetic/sub-03/ses-01/beh/sub-03_ses-01_task-stroop+whitebg_beh.tsv
@@ -0,0 +1,3 @@
+trial	response	reaction_time	stim_file
+congruent	red	1.435	images/word-red_color-red.jpg
+incongruent	red	1.739	images/word-red_color-blue.jpg
diff --git a/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop+blackbg_beh.tsv b/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop+blackbg_beh.tsv
new file mode 100644
index 000000000..655289e92
--- /dev/null
+++ b/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop+blackbg_beh.tsv
@@ -0,0 +1,3 @@
+trial	response	reaction_time	stim_file
+congruent	red	1.435	images/word-red_color-red.jpg
+incongruent	red	1.739	images/word-red_color-blue.jpg
diff --git a/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop+whitebg_beh.tsv b/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop+whitebg_beh.tsv
new file mode 100644
index 000000000..655289e92
--- /dev/null
+++ b/synthetic/sub-04/ses-01/beh/sub-04_ses-01_task-stroop+whitebg_beh.tsv
@@ -0,0 +1,3 @@
+trial	response	reaction_time	stim_file
+congruent	red	1.435	images/word-red_color-red.jpg
+incongruent	red	1.739	images/word-red_color-blue.jpg
diff --git a/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop+blackbg_beh.tsv b/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop+blackbg_beh.tsv
new file mode 100644
index 000000000..655289e92
--- /dev/null
+++ b/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop+blackbg_beh.tsv
@@ -0,0 +1,3 @@
+trial	response	reaction_time	stim_file
+congruent	red	1.435	images/word-red_color-red.jpg
+incongruent	red	1.739	images/word-red_color-blue.jpg
diff --git a/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop+whitebg_beh.tsv b/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop+whitebg_beh.tsv
new file mode 100644
index 000000000..655289e92
--- /dev/null
+++ b/synthetic/sub-05/ses-01/beh/sub-05_ses-01_task-stroop+whitebg_beh.tsv
@@ -0,0 +1,3 @@
+trial	response	reaction_time	stim_file
+congruent	red	1.435	images/word-red_color-red.jpg
+incongruent	red	1.739	images/word-red_color-blue.jpg