BF: Use sigma in this mode.
BF: Use sigma in this mode.

JohnGriffiths/dipy,nilgoyyou/dipy,villalonreina/dipy,StongeEtienne/dipy,matthieudumont/dipy,FrancoisRheaultUS/dipy,StongeEtienne/dipy,JohnGriffiths/dipy,matthieudumont/dipy,villalonreina/dipy,FrancoisRheaultUS/dipy,nilgoyyou/dipy