Less excitation of horizontal cell means they are also hyperpolarized, and release less ____ onto central cone, so less inhib thing being released from hor onto central cone, so then central cone is excited / depolarized. If central cone is depolarized, this is like it is in the dark (bc usually hyper when in light)So, when central cone is depolarized due to light hitting surround cone, more glutamate released which causes off center cell to be excited (ampa and kainate love more glutamate) and on center cell to be inhibited (Gi in action!)

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