Model predictions of features in microsaccade-related neural responses in a feedforward network with short-term synaptic depression

Recently, the significant microsaccade-induced neural responses have been extensively observed in experiments. To explore the underlying mechanisms of the observed neural responses, a feedforward network model with short-term synaptic depression has been proposed [Yuan, W.-J., Dimigen, O., Sommer, W...

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Bibliographic Details
Published in:Scientific reports 2016-02, Vol.6 (1), p.20888-20888, Article 20888
Main Authors: Zhou, Jian-Fang, Yuan, Wu-Jie, Zhou, Zhao, Zhou, Changsong
Format: Article
Language:English
Subjects:
639/705/1042
639/766/530/2801
639/766/530/2803
Algorithms
Fixation, Ocular - physiology
Humanities and Social Sciences
Humans
Information processing
Models, Neurological
multidisciplinary
Nervous system
Neuronal Plasticity
Photic Stimulation
Saccades - physiology
Science
Synaptic depression
Visual Perception - physiology
Visual task performance
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Summary:Recently, the significant microsaccade-induced neural responses have been extensively observed in experiments. To explore the underlying mechanisms of the observed neural responses, a feedforward network model with short-term synaptic depression has been proposed [Yuan, W.-J., Dimigen, O., Sommer, W. and Zhou, C. Front. Comput. Neurosci. 7, 47 (2013)]. The depression model not only gave an explanation for microsaccades in counteracting visual fading, but also successfully reproduced several microsaccade-related features in experimental findings. These results strongly suggest that, the depression model is very useful to investigate microsaccade-related neural responses. In this paper, by using the model, we extensively study and predict the dependance of microsaccade-related neural responses on several key parameters, which could be tuned in experiments. Particularly, we provide a significant prediction that microsaccade-related neural response also complies with the property “sharper is better” observed in many contexts in neuroscience. Importantly, the property exhibits a power-law relationship between the width of input signal and the responsive effectiveness, which is robust against many parameters in the model. By using mean field theory, we analytically investigate the robust power-law property. Our predictions would give theoretical guidance for further experimental investigations of the functional role of microsaccades in visual information processing.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep20888