摘要
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.
作者
QU Jing-Yi
WANG Ru-Bin
ZHANG Yuan
DU Ying
屈景怡;王如彬;张原;杜莹(Institute for Cognitive Neurodynamics,School of Information Science and Engineering,School of Science,East China University of Science and Technology,Shanghai 200237;School of Electronics and Information,Northwestern Polytechnical University,Xi'an 710072)
基金
Supported by the Fundamental Research Funds for the Central Universities
the National Natural Science Foundation of China under Grant Nos.10872068 and 11002055.
