ExpCogSci - Team

Hamit Başgöl

Eberhard Karls Universität Tübingen

Experimental Cognitive Science

Sand 6, F239

72076 Tübingen

Germany

E-Mail: hamit.basgoel (at) uni-tuebingen.de

If you want to discuss something, just send me an email.

Research Interests & Short CV

Long CV is here

I study how humans detect, learn, and adapt to regularities in their sensory environment, and how these processes are reflected in physiological arousal associated with pupil size. Using psychophysical experiments and pupillometry, I investigate how the pupil dynamically responds when predictions are violated. In my current research line, I explore how individuals differ in their sensitivity to such changes by experimental studies and if their sensitivies could be estimated based on their pupil size using computational models. We therefore aim to identify general principles of how the brain monitors and updates its internal models of the world.

2012–2016: I studied Psychology (B.A.) at Hacettepe University.
2017–2021: I completed my M.A. in Cognitive Science at Boğaziçi University, working with Dr. Emre Ugur and Dr. Inci Ayhan on event segmentation and time perception.
2022–present: I am a Ph.D. researcher in the Experimental Cognitive Science Group at the University of Tübingen, supervised by Prof. Volker H. Franz and Prof. Peter Dayan.

Conference Presentations and Publications (check CV first)

Journal papers

Basgol, H., Raab, F., Dayan, P., & Franz, V. H. (in press). Modality-general sensitivity of pupil responses to regularity violations. Cognitive, Affective, and Behavioral Neuroscience. [ Ask for copy | Pre-registrations: 1 | 2 | Abstract ]

Basgol, H., Ayhan, I., & Ugur, E. (2024). Predictive event segmentation and representation with neural networks: a self-supervised model assessed by psychological experiments. Cognitive Systems Research, 83, 101167. [ DOI | Abstract ]

Basgol, H., Ayhan, I., & Ugur, E. (2021). Time perception: a review on psychological, computational and robotic models. IEEE Transactions on Cognitive and Developmental Systems. [ DOI | Abstract ]

Basgol, H., & Ugur, E. (2020). Predicting human visual complexity judgments via deep learning. (Conference publication at the IEEE 28th Signal Processing and Communications Applications Conference (SIU), 2020) [ DOI | Abstract ]

Available at preprint server

Basgol, H., Raab, F., Dayan, P., & Franz, V. H. (2024). Modality-general sensitivity of pupil responses to regularity violations. PsyArXiv. (Preprint) [ DOI | Abstract ]

Invited talks

Basgol, H. (2026, January 20). Do Pupil Responses Reveal Computational Processes During Sequence Processing? Cognitive Science Colloquium at Center of Cognitive Science Center. Organizers: Bettina Rolke and Volker Franz, University of Tübingen, Tübingen, Germany.

Basgol, H. (2025, May 26). Pupil Dilation Responses to Changes within Auditory and Visual Sequences. Modal and Amodal Cognition, Organizer: Karin Bausenhart, University of Tuebingen, Tuebingen, Germany.

Basgol, H. (2025, July 1). Pupil Responses to Regularity Violations in Visual and Auditory Sequences. Modal and Amodal Cognition, PI: Dr Felix Wichmann, University of Tuebingen, Tuebingen, Germany.

Basgol, H. (2023, November 11). Pupil Dilation Responses to Auditory and Visual Uncertainties. Neuro-Cognitive Modeling Group, PI: Dr Martin Butz, University of Tuebingen, Tuebingen, Germany.

Basgol, H. (2023, September 8). Pupil Dilation Responses to Auditory and Visual Uncertainties. Attention & Perception Lab, PI: Dr Cathleen Moore, University of Iowa, Iowa, USA [online].

Basgol, H. (2023, April 25). The Modulation of Pupil Dilation Response Associated with Model Reset. Neural Information Processing, PI: Dr Felix Wichmann, University of Tuebingen, Tuebingen, Germany.

Basgol, H. (2023, December 22). Time Perception & Event Segmentation. Cognitive Science (COGS500 / CMPE489), PI: Emre Ugur, Bogazici University, Istanbul, Turkey [online].

Conference talks

Basgol, H., Dayan, P., & Franz, V. H. (2026). Modality-general Sensitivity of Pupil Responses to Regularity Violations. (Talk at the 68th “Tagung experimentell arbeitender Psychologen” (TeaP), 15.3.--18.3.2026, Tübingen, Germany) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2024). Pupil dilation responses to the emergence and violation of visual regularities. (Talk at Interdisciplinary Advances in Statistical Learning, 2024, Donostia San Sebastian, Spain) [ Abstract ]

Basgol, H., Ayhan, I., & Ugur, E. (2021). A self-supervised and predictive processing-based model of event segmentation and learning. (Talk at the Annual Conference of the Cognitive Science Society, Virtual)

Basgol, H., Ayhan, I., & Ugur, E. (2020). A computational model of event segmentation and learning. (Talk at the International Virtual Symposium on Brain and Cognitive Science (ISBCS 2020), Turkey)

Basgol, H., & Ugur, E. (2020). Insan görsel karmasiklik kararlarinin derin øgrenme ile tahmin edilmesi. (Konferans: Sinyal ve iletisim Konferansi, Türkiye)

Basgol, H., & Ugur, E. (2019). Zaman algisina iliskin hesaplamali modeller ve bilissel robotbilim modelleri. (Konferans: Türkiye Robotbilim Konferansi, Türkiye)

Conference posters

Basgol, H., Dayan, P., & Franz, V. H. (2025). How many repetitions are needed to detect spatiotemporal visual regularities? (Poster at the European Conference on Visual Perception (ECVP), 2025, Mainz, Germany) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2025). Violations of spatiotemporal visual regularities lead to pupil dilation responses. (Talk at the Tagung experimentell arbeitender Psycholog:innen (Conference of Experimental Psychologists, TeaP2025), Frankfurt, Germany) [ Abstract ]

Basgol, H., F., R., Dayan, P., & Franz, V. H. (2024). Violations of visual regularities induce pupil dilation responses. (Poster at the Tagung experimentell arbeitender Psycholog:innen (Conference of Experimental Psychologists, TeaP2024), Regensburg, Germany) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2023). Does pupil-linked arousal to model reset require attention? (Poster at the Tagung experimentell arbeitender Psycholog:innen (Conference of Experimental Psychologists, TeaP2023), Trier, Germany) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2023). How much evidence is required to detect spatiotemporal visual regularities? (Poster at the Systems Vision Science Summer School and Symposium (SVS 2025), Tuebingen, Germany, summerschool.lizhaoping.org)

Basgol, H., Dayan, P., & Franz, V. H. (2023). How much evidence is required to detect spatiotemporal visual regularities? (Poster at the Neurowissenschaftliche Nachwuchskonferenz (NeNa 2023), Frankfurt, Germany) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2023). How much evidence is required to detect spatiotemporal visual regularities? (Poster at the Systems Vision Science Summer School and Symposium (SVS 2023), Tuebingen, Germany, summerschool.lizhaoping.org)

Basgol, H., Dayan, P., & Franz, V. H. (2022). Investigating pupil-linked arousal to complex and statistically uncertain auditory patterns. (Poster at the Tagung experimentell arbeitender Psycholog:innen (Conference of Experimental Psychologists, TeaP2022), Online) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2022). Is pupil-linked arousal a marker of model violation but not model update? (Poster at the European Conference on Visual Perception (ECVP 2022), Nijmegen, the Netherlands) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2022). Pupil-linked arousal is sensitive to model reset but not model update. (Online poster presentation at the Psychonomic Society 63rd Meeting (Psychonomics 2022), Boston, USA) [ Abstract ]

Basgol, H., Dayan, P., & Franz, V. H. (2022). Pupil-linked arousal is sensitive to model reset but not model update. (Poster at the Cognitive Science Center Tuebingen Launch Event, Tuebingen, Germany)

Basgol, H., Dayan, P., & Franz, V. H. (2022). Pupil-linked arousal is sensitive to model reset but not model update. (Poster at the Informatik, University of Tuebingen PhD Day, Tuebingen, Germany)