"Biologically Inspired Neuroprosthetic Systems for Substituting Lost Motor Function" Başlıklı Seminer
Boğaziçi-BME/Lifesci & İnovita - İSEK Ortak Semineri
Biologically Inspired Neuroprosthetic Systems for Substituting Lost Motor Function
4 Aralık 2018 (Salı); 13.00 – 14.00
Biomedikal MÜhendisliği Enstitüsü, AZ-19, Boğaziçi Üniversitesi Kandilli Kampüsü, İstanbul
Mehmet Kocatürk, PhD
Department of Biomedical Engineering, Istanbul Medipol University
Motor neuroprostheses, in other words brain-machine interfaces, aim to restore functions lost to disease or injury by directly communicating with neuronal populations in the brain. In conventional motor neuroprosthetic design approach, the main motivation has generally been to find an input–output mathematical model, which optimally transforms cortical neural signals into intended prosthetic actions. Based on an input-output model or transform, these systems mostly ignore the role of spike timing in neural circuits and functional interactions between brain subsystems related to motor control. In this sense, the information processing principles of these systems are fundamentally different from those of natural neural circuits. This talk will present a more biologically inspired design perspective which may hold potential to improve the state of the art design in motor neuroprosthetic systems. In the present design approach, biologically plausible model neurons are utilized for decoding the motor intent of the subject. Decoder adaptation in the present system is also realized in a neurally-inspired manner, by simulating a possible synaptic plasticity mechanism underlying reinforcement learning. This talk will also introduce our preliminary work with behaving rodents toward validating the practicality of the present control architecture.
Mehmet Kocatürk received a B.S. degree in electronics and communication engineering from Istanbul Technical University in 2004 and his M.S. and Ph.D. degrees in biomedical engineering from Bogazici University in 2007 and 2015, respectively. In addition to his academic activities, he worked in MobiArts Co. as an embedded system design engineer and Nortel Networks Netas Co. as a software design engineer between 2005 and 2008. He is currently an assistant professor in the Department of Biomedical Engineering in Istanbul Medipol University and affiliated with Regenerative and Restorative Medicine Center (REMER) at the same university. His research interests focus on the physiology of the motor system and motor neuroprosthetics.