diff --git a/spm_funcs.py b/spm_funcs.py
index 450c1ab..93a2ed4 100644
--- a/spm_funcs.py
+++ b/spm_funcs.py
@@ -54,8 +54,17 @@ def get_spm_globals(fname):
     spm_vals : array
         SPM global metric for each 3D volume in the 4D image.
     """
-    # +++your code here+++
-    # return
+    img = nib.load(fname)
+    data = img.get_fdata()
+
+    spm_vals = []
+
+    for i in range(data.shape[-1]):
+        volume = data[..., i]
+        spm_val = spm_global(volume)
+        spm_vals.append(spm_val)
+
+    return spm_vals
 
 
 def main():