The Analysis of Dynamic Correlation between Neurons in the Primary Visual Cortex of Rats

Abstract:

The correlation between neurons in primary visual cortex (V1 region) plays a vital role in the encoding process of visual information. By experimenting on Anesthesia Long Evens (LE) rats, a novel method called state-space log-linear model (SLM) was applied to research the curves of dynamic correlation between neurons in V1 under stimuli with different orientation gratings. The dynamic correlation curve was analyzed by extracting features and activity level of neurons measured by the response strength of identical grating (RSIG). Our investigations demonstrate that: 1) The means of dynamic correlation curve between neurons always decrease with its RSIG; 2) During the visual stimuli period, correlation between neurons shows an increasing trend; 3) If the best preferred orientations of two neurons are orthogonal, the correlation between neurons may appear decreasing trend when the pair receives stimuli from orientation with weak RSIG.

• Periodical: Advanced Materials Research (Volumes 955-959)
• Pages: 821-825
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.955-959.821
• Online since: June 2014
• Authors: Li Shi, Kun Feng Xu*, Xiao Ke Niu
• Keywords: Dynamic Correlation, Orientation Gratings, State-Space Log-Linear Model

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