The neurofeedback services offered by Dr. Joseph N. O'Donnell and the staff at Northwest Biofeedback Center have helped people in the Chicago area since 1991. Patients in Des Plaines, Schaumburg, Glenview, Northbrook, Arlington Heights, Hoffman Estates, Mount Prospect and other cities throughout the region have turned to this form of biofeedback to help treat several different types of mental and physical health issues.