Pavan, Andrea and Contillo, Adriano and Mather, George (2013) Modelling Adaptation to Directional Motion Using the Adelson-Bergen Energy Sensor. PLOS ONE, 8 (3): e59298. ISSN 1932-6203,
Full text not available from this repository. (Request a copy)Abstract
The motion energy sensor has been shown to account for a wide range of physiological and psychophysical results in motion detection and discrimination studies. It has become established as the standard computational model for retinal movement sensing in the human visual system. Adaptation effects have been extensively studied in the psychophysical literature on motion perception, and play a crucial role in theoretical debates, but the current implementation of the energy sensor does not provide directly for modelling adaptation-induced changes in output. We describe an extension of the model to incorporate changes in output due to adaptation. The extended model first computes a space-time representation of the output to a given stimulus, and then a RC gain-control circuit ("leaky integrator") is applied to the time-dependent output. The output of the extended model shows effects which mirror those observed in psychophysical studies of motion adaptation: a decline in sensor output during stimulation, and changes in the relative of outputs of different sensors following this adaptation.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CAT STRIATE CORTEX; VISUAL-CORTEX; COMPLEX CELLS; TRANSPARENT MOTION; APPARENT MOTION; SINGLE CELLS; RESPONSES; DISCRIMINATION; NORMALIZATION; PERCEPTION; |
| Subjects: | 100 Philosophy & psychology > 150 Psychology |
| Divisions: | Human Sciences > Institut für Psychologie > Lehrstuhl für Psychologie I (Allgemeine Psychologie I und Methodenlehre) - Prof. Dr. Mark W. Greenlee |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Apr 2020 12:56 |
| Last Modified: | 23 Apr 2020 12:56 |
| URI: | https://pred.uni-regensburg.de/id/eprint/16980 |
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