Residency thesis · BAP04-B-2026-6538 · in preparation
Supervisor · Prof. Dr. Gökhan Sarısoy · Ondokuz Mayıs University
Belief updating and sensory attenuation in schizophrenia
Two accounts of delusion sit side by side in the literature and are rarely tested in the same people. One says beliefs are revised on too little evidence. The other says self-generated sensation is not attenuated, so ordinary actions carry the weight of external events.
The study runs both: a beads task modelled with the Hierarchical Gaussian Filter, and a force-matching task on a device built for this protocol. Model and parameter recovery are run before data collection. The analysis plan is written; public registration is pending.
The force-matching rig was designed and machined in-house because commercial equivalents cost more than the grant and could not be modified.