People
Principal Investigator

Prof. Dr. Bahar Güntekin
Dr. Güntekin is the Principal Investigator of the Bahar Guntekin Lab. at Istanbul Medipol University. She is professor of Biophysics and Head of the Neuroscience program under Brain and Cognition Research Center, BEYKOG, SABITA. For more about her background, please see her faculty page and her current curriculum vitae.
bguntekin@medipol.edu.tr
PhD Students

Harun Yırıkoğulları
Harun Yırıkoğulları graduated from the Psychology Undergraduate Program at Ankara Yıldırım Beyazıt University in 2018. As part of his master’s studies, he joined the Cognitive Neuroscience and EEG Laboratory (Güntekin Lab) at Istanbul Medipol University in 2019 and completed his master’s degree in Neuroscience under the supervision of Prof. Dr. Bahar Güntekin with a thesis titled “Investigation of working memory performance via EEG event-related oscillations following acute sleep deprivation.” Following his graduation, he began the Neuroscience PhD program at the same laboratory and is currently continuing his work on his doctoral thesis, titled “Modulation of cognitive and neural oscillatory dynamics via light stimulation following sleep deprivation.”
harun.yirikogullari@medipol.edu.tr
Simay Alptekin
simay.alptekin@medipol.edu.tr
Furkan Erdal
furkan.erdal@std.medipol.edu.tr
Hassan Hassanpour
hassanhassanpour@std.medipol.edu.tr

Aziz Akkaya
Aziz is a PhD student in the Neuroscience PhD program, where he studies neural oscillations in response to speech, with a particular focus on how the brain tracks rhythmic structure in language. More broadly, he wants to understand the dynamics of the brain in the time domain. Before joining the program, he earned an MA in Cognitive Science and a BA in Psychology from Boğaziçi University, writing his thesis on the relationship between syntax and musical rhythm. Outside the lab, he is something of an intellectual wanderer, reading widely in philosophy, religion, and history.
Master Students
Ayşenur Akan
Ayşenur Akan holds a B.A. in Psychology from Üsküdar University and an M.Sc. in Neuroscience from Medipol University. Her research focuses on cognitive electrophysiology, EEG biomarkers, and neural dynamics in neurodegenerative disorders. Outside her lab activities, she likes to capture all the cute cats of Istanbul and talk to them.
aysenur.akan@medipol.edu.tr

Yaren Varolgüneş
Yaren Varolgüneş graduated from the Department of Psychology at Istanbul University in 2023. She completed her Master’s degree in Neuroscience at Istanbul Medipol University in 2026. Her research focuses on time perception, neuromodulation and the oscillatory dynamics of cognitive processes in the brain. She continues to work in the Cognitive Neuroscience and EEG Laboratory under the supervision of Professor Bahar Güntekin.
yaren.varolgunes@medipol.edu.tr

Beyza Sevgili
Beyza Sevgili completed her undergraduate degree in Molecular Biology and Genetics at Necmettin Erbakan University, where she conducted research in cancer biology and astrobiology. She completed her M.S. in Neuroscience at Istanbul Medipol University under the supervision of Prof. Dr. Bahar Güntekin. She joined SABITA in 2024 and continues her research within the Güntekin Lab. Her research focuses on brain oscillations and behavior in neurodegenerative diseases, working with both human and animal models. She also studies the potential of neuromodulation methods to restore impaired brain connectivity.
beyza.sevgili@medipol.edu.tr
Nurten Kaya
Nurten Kaya graduated with a master’s degree in Clinical Psychology from FSMVU. She is currently pursuing a master’s degree in Neuroscience at Istanbul Medipol University, where she works in the Cognitive Neuroscience and EEG Laboratory. She also works as a researcher at SABITA investigating EEG-based cognitive processes. Her research interests include attention, memory, sleep, circadian rhythms, and the neural mechanisms underlying cognitive functions.
nurten.kaya1@medipol.edu.tr

Nezahat İrem Bayram
İrem Bayram graduated from Konya Food and Agriculture University with a bachelor’s degree in Psychology. During her undergraduate studies, she investigated the relationship between self-differentiation and obedience to authority, completing her thesis on this topic. She currently works as a researcher in the lab while pursuing her master’s degree, where she actively contributes to various academic projects. Her master’s thesis focuses on decision-making and neural entrainment. Outside of research, she likes doing various sports and discovering new foods.
nezahat.bayram@medipol.edu.tr

Şevval Teke
Şevval Teke received her BA degree in Psychology from Boğaziçi University. During her undergraduate studies, she took part in several research projects in the fields of cognitive and developmental psychology. In her senior year, she worked as an intern researcher on a TÜBİTAK-funded project titled “Retrospective Event Segmentation of Episodic Memory”, which examined the retrospective segmentation of previously encoded memories. She is currently pursuing her master’s degree in Neuroscience at Istanbul Medipol University and working in the Güntekin Lab under the supervision of Prof. Bahar Güntekin.
sevval.teke@std.medipol.edu.tr

Esra Kızıldemir
Esra Kızıldemir completed her undergraduate degree in Molecular Biology and Genetics at Ondokuz Mayıs University, where she developed an interest in microbiology and biotechnology. She is currently pursuing a master’s degree in Neuroscience at Istanbul Medipol University under the supervision of Prof. Dr. Bahar Güntekin. Her research interests include neuroscience and electrophysiological approaches to understanding brain function. Outside of her academic work, she enjoys going for walks and exploring new places.
esra.kizildemir@std.medipol.edu.tr

Yağmuray Düşgün
Yağmuray graduated from the Psychology undergraduate program at Istanbul Ticaret University and is currently continuing her education in the Neuroscience graduate program at Istanbul Medipol University. Her main interests and research areas focus on cognitive neuroscience, brain oscillations and EEG signal processing.
yagmuray.dusgun@std.medipol.edu.tr

Şule Gül Öztürk
Şule Gül holds a B.A. in Psychological Counseling and Guidance from Yeditepe University and an M.A. in Psychological Counseling from Yıldız Technical University. She is currently pursuing an M.Sc. in Neuroscience at Istanbul Medipol University and is a member of the Güntekin Lab, where she supports ongoing research activities. She has worked as a school counselor in private schools and continues to provide psychological counseling. Her research interests include the intersection of psychology, neuroscience, and art therapy. Outside academia, she is involved in her family’s art academy, plays the flute, and enjoys ceramics.
sule.gul@std.medipol.edu.tr

Enes Yanılmaz
Enes Yanılmaz is a master student in Neuroscience. He graduated with B.S. in Neuroscience from Temple University. His research interests include consciousness, neuromodulation and BCI interfaces.
enes.yanilmaz@medipol.edu.tr

Saba Eylül Özyurt
Eylül Özyurt graduated from Üsküdar University with a degree in Molecular Biology and Genetics and a minor in Psychology. She is currently pursuing a master’s degree in Neuroscience at Istanbul Medipol University. Her research interests include creativity, memory, and behavior. Outside of her academic work, she practices contemporary dance and enjoys crocheting, yoga, music, and art.
@medipol.edu.tr
Alumni
Gizem Karadağ
Esra Ünsal, PhD
Rümeysa Kahveci
Yunus Emre Balcı
Sümeyye Özdemir
Elifnur Bingöl
Rümeysa Duygun
İrem Yemeniciler
Yasin Yıldırım, PhD
Burcu Bölükbaş
Samet Çelik, PhD
Esra Dalmızrak
Tuba Aktürk, PhD
Samet Hakan Uzunlar
Merve Manga
Ebru Yıldırım, PhD
Umut Aybarç
Ece Ruşen
Fadime Çadırcı
Nagihan Mantar
Reyyan Uysal
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