Selim Onat

I am a neuroscientist working currently on how humans make generalizations based on what they have previously learnt. To do so, I am using a variety of methodologies including fMRI (1), autonomous (2), as well as eye-movement recordings (3).

This research emanates from the well-established field of "stimulus generalization" following mainly the "lineage" of Hovland, Hull and Roger Shepard (4), and including the more recent computational work of Josua Tenenbaum (5). Furthermore, it integrates work on anxiety disorders, as it is believed that these mechanisms are impaired in people suffering from anxiety problems.

In the past, I have been working on how the nervous system processes natural scenes both at the electrophysiological and sensory-motor level. Since the times of Hubel and Wiesel, visual processing had been
overwhelmingly studied with artificial stimuli such as moving edges. However this type of stimuli suffer from an ecological validity problem, as they only rarely occur in real-life. We therefore investigated cortical processing during viewing of natural movies. This previous work focused on visual processing using mostly the technique of voltage-sensitive dye imaging and eye-tracking.

Github Repositories

Why  don't scientists know anything about version tracking?

Me and my coworkers, we are making publicly available all code available to the rest of scientific community in https://github.com/selimonat. The most useful repositories include

  • some OOP code for the analysis of eye-tracking and autonomic data, 
  • some experiments coded with Psychophysics Toolbox featuring presentation of stimuli in synchrony with scanner pulses, as well as eye-tracking experiments with adaptive perceptual threshold detection, and many more.