Münster 1997 – scientific programme

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DY: Dynamik und Statistische Physik

DY 19: Poster II

DY 19.4: Poster

Thursday, March 20, 1997, 09:30–12:30, Z

Neuronal Self-Organization of Motion Percepts: Experimental results — •Stefan Arndt and Hans-Otto Carmesin — Inst. f. Theoretische Physik, Universiät Bremen, 28334 Bremen

A network model for stroboscopic alternative motion is presented. In our poster we give first experimental results and the fit of these data to our network model. To accomplish this, a short introduction into the psychological background of the experiment is given (see below). Based on this introduction the basic features of our network model are outlined. Finally the results and the fitted network parameters are presented.
The psychological paradigm. Stimulus binding is simple in the case of motion percepts. Such stimulation is given by light dots alternating with fequency ν. The setup of dots used in the experiments uses a rectangular arrangement. The stimulation consists of two alternating patterns separated by a pause, each consisting of two dots at the same diagonal. An observer perceives succession at low frequencies, simultaneity at high, and a motion percept at intermediate frequencies. Thereby the motion percept is either a vertical motion of two dots or a horizontal motion of two dots, it is the so-called stroboscopic alternative motion.
H.O. Carmesin and S. Arndt. A neural network model for stroboscopic alternativ motion. Biol. Cyb. 75, pages 239–251, 1996.
P. Kruse, H.O. Carmesin, L. Pahlke, D. Strüber, and M. Stadler. Continuous phase transitions in the perception of multistable visual patterns. Biol. Cyb. (submitted), 1996.