Improve EN model of simple cell combined with non-classical receptive field

Orientation selectivity of neurons in mammalian visual cortex is a unique physiological characteristic. In the primary visual cortex, neurons with the same orientation cluster together to form the orientation column of the visual cortex. The mechanism of orientation selectivity has been debated for a long time, and the discussion of the structure and function of orientation columns has also been a hot issue. Here we present two basic properties of the visual cortex response, orientation selectivity and surround suppression. Based on these two different characteristics of primary visual cortical neurons, an improved EN model is proposed. The model can well simulate the physiological structure of simple cells and take into account the suppression and facilitation of non-classical receptive fields.