No need to cast inputs as arrays, because arrays are required params.

Author: arokem

nitime/algorithms/event_related.py

@@ -55,9 +55,9 @@ def fir(timeseries, design):
     and Unbiased Approach. Human Brain Mapping, 11:249-260
 
     """
-    X = np.array(design)
-    y = np.array(timeseries)
-    h = np.array(np.dot(np.dot(linalg.pinv(np.dot(X.T, X)), X.T), y.T))
+    h = np.array(np.dot(np.dot(linalg.pinv(np.dot(design.T, design)),
+                               design.T),
+                        timeseries.T))
     return h