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. Author manuscript; available in PMC: 2011 May 1.
Published in final edited form as: Pain. 2010 Mar 4;149(2):235–242. doi: 10.1016/j.pain.2010.02.004

Figure 3.

Figure 3

An intraocular adrenergic mechanism contributes to light-evoked Vc/C1 activity.

a. Peristimulus time histograms before (upper panel) and after (lower panel) ivt injection of norepinephrine (NE, 10 mM, 1 μl) on the responses to light of a CC neuron. b. Ivt injection of adrenergic agents inhibits light-evoked responses. High dose norepinephrine (upper panel, 10mM, 1 μl) or phenylephrine (lower panel, 10 mM, 1 μl) markedly inhibits the responses to moderate and high intensity light. *P < 0.05, **P < 0.01 versus response to low intensity light; b = P < 0.01 versus pre-drug value.