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A Neurodynamical Model for Selective Visual Attention |
| QU Jing-Yi1**, WANG Ru-Bin1, ZHANG Yuan 2, DU Ying1
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1Institute for Cognitive Neurodynamics, School of Information Science and Engineering, School of Science, East China University of Science and Technology, Shanghai 200237
2School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072 |
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QU Jing-Yi, WANG Ru-Bin, ZHANG Yuan et al 2011 Chin. Phys. Lett. 28 100502 |
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Abstract A neurodynamical model for selective visual attention considering orientation preference is proposed. Since orientation preference is one of the most important properties of neurons in the primary visual cortex, it should be fully considered besides external stimuli intensity. By tuning the parameter of orientation preference, the regimes of synchronous dynamics associated with the development of the attention focus are studied. The attention focus is represented by those peripheral neurons that generate spikes synchronously with the central neuron while the activity of other peripheral neurons is suppressed. Such dynamics correspond to the partial synchronization mode. Simulation results show that the model can sequentially select objects with different orientation preferences and has a reliable shift of attention from one object to another, which are consistent with the experimental results that neurons with different orientation preferences are laid out in pinwheel patterns.
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05.45.-a
05.45.Tp
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Received: 11 January 2011
Published: 28 September 2011
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