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.

Programming a Weather Station with Quartz Composer

This is a weather station clock programmed in Quartz Composer. There are 6 different parameters that are taken into consideration. The temperature, air pressure, rain drop, humidity, wind speed and direction. Weather information is downloaded from Osnabrueck University Physics Department's web page and an XML parser extracts different parameters. These parameters determine then the background color (reddish for warm and bluesh for cold), diameter of the turning rainbow wheel (high air pressure), global blurriness (humidity), speed of the wheel (average wind speed). Two examples illustrates how the clock behaves under different weather conditions: