title: A model of microsaccade-related neural responses induced by short-term depression in thalamocortical synapses.
abstract: Microsaccades during fixation have been suggested to counteract visual fading. Recent experiments have also observed microsaccade-related neural responses from cellular record, scalp electroencephalogram (EEG), and functional magnetic resonance imaging (fMRI). The underlying mechanism, however, is not yet understood and highly debated. It has been proposed that the neural activity of primary visual cortex (V1) is a crucial component for counteracting visual adaptation. In this paper, we use computational modeling to investigate how short-term depression (STD) in thalamocortical synapses might affect the neural responses of V1 in the presence of microsaccades. Our model not only gives a possible synaptic explanation for microsaccades in counteracting visual fading, but also reproduces several features in experimental findings. These modeling results suggest that STD in thalamocortical synapses plays an important role in microsaccade-related neural responses and the model may be useful for further investigation of behavioral properties and functional roles of microsaccades.
authors: Department of Physics, Institute of Computational and Theoretical Studies, Centre for Non-linear Studies and the Beijing-Hong Kong-Singapore Joint Centre for Nonlinear and Complex Systems (Hong Kong), Hong Kong Baptist University Kowloon Tong, Hong Kong, China ; College of Physics and Electronic Information, Huaibei Normal University Huaibei, China.
authors: Wu-Jie
authors: WJ
authors: Yuan
authors: Olaf
authors: O
authors: Dimigen
authors: Werner
authors: W
authors: Sommer
authors: Changsong
authors: C
authors: Zhou
keywords: feedforward network; fixation; microsaccades; short-term depression; visual fading
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