return real timecourse and hrf

Author: MSenden

code/python/cni_toolbox/IRM.py

@@ -110,7 +110,7 @@ def get_hrf(self):
         else:
             hrf = ifft(self.hrf_fft, axis = 0)[0:self.l_hrf]
 
-        return hrf
+        return np.abs(hrf)
 
     def get_stimulus(self):
         '''
@@ -130,7 +130,7 @@ def get_timecourses(self):
             predicted timecourses
         '''
 
-        return ifft(self.tc_fft, axis = 0)[0:self.n_samples, :]
+        return np.abs(ifft(self.tc_fft, axis = 0)[0:self.n_samples, :])
 
     def set_hrf(self, hrf):
         '''