Eugene German added 13 points for Northern Illinois (7-5). Thorpe, Bradley and German scored 34 of the Huskies 36 second-half points.
Dikembe Dickson's two free throws tied it at 41 with 12:19 left, and his jumper more than two minutes later put Illinois-Chicago (4-8) ahead 44-43.
Thorpe and German each made a 3 and Bradley added two free throws and Northern Illinois was ahead by seven. Dominique Matthews shaved the deficit to two before German scored six of the Huskies' next 10 points for a 62-53 lead with 3:19 remaining.
Illinois-Chicago was 45 percent from the field shooting against 41 for the Huskies and had a 41-36 rebounding edge but turned it over 17 times.