woensdag 22 juni 2011

A model-based theory on the signal transformation for microsaccade generation

 
 

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Publication year: 2011
Source: Neural Networks, In Press, Accepted Manuscript, Available online 22 June 2011
Keiichiro, Inagaki , Yutaka, Hirata , Shiro, Usui
The eyes are continuously fluctuating even during fixation. The fluctuations are called miniature eye movements and consist of microsaccades, drifts, and tremors. It has been revealed that these miniature eye movements aid our vision; they improve the visibility of high spatial frequency components, and prevent retinal adaptation during fixation. Although the functional roles of the miniature eye movements have gradually been uncovered, their generation mechanism remains a mystery. Here, we focused on microsaccades, and constructed a neuronal network model to explore their generation mechanism. Several lines of evidence assure that microsaccades and saccades share the same neuronal circuitry because they...
 Highlights: ► We constructed a model for microsaccades based on the well-defined saccade pathway. ► The model reproduces square-wave jerks and single-sided microsaccades. ► Model Microsaccades are generated as BNs are partially released from OPNs inhibition. ► OPNs play a key role for microsaccades generation.

 
 

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