His first grant as a junior faculty member was the Young Investigator Award from the American Heart Association Oklahoma Affiliate in 1983 which started his work in developing techniques for recording accessory pathway activation potentials in patients with Wolff-Parkinson-White syndrome. He and his coworkers have played a significant role in the development of RF ablation by using novel recording techniques to localize the substrate for ablation of typical accessory pathways, epicardial posteroseptal accessory pathways, Mahaim fibers, slow AV nodal pathways (multiple variants of AVNRT), Idiopathic LV Tachycardia (Purkinje potentials) and Post-MI VT (mid diastolic potentials). In recognition of his research achievements Dr. Jackman was given the Provost's Research Award and the honorary title of George Lynn Cross Research Professor at the University of Oklahoma Health Sciences Center in 1993. In 1982 he won first prize in the Young Investigator Award Competition of the North American Society of Pacing and Electrophysiology based on the research he had done in his Fellowship. In 2000 he received the prestigious award of Pioneer in Pacing and Electrophysiology from the North American Society of Pacing and Electrophysiology, the youngest person so honored in the history of the society, for his work in the development of catheter ablation techniques. Jackman was recipient of the 2006 Mirowski Award. He has been cited in Best Doctors in America continuously since 1992.