Fig. 10From: Visual evoked potentials in the horseFVEPs after retrobulbar nerve block and transection of the optic nerve. FVEPs recorded at Pz-45 in horse I from the right eye (left column) before retrobulbar nerve block (uppermost tracing), 10, 20 and 25Â min after retrobulbar nerve block (middle rows) and after transection of the optic nerve (lowermost tracing). Simultaneous FERG recordings from the right eye are shown in the right columnBack to article page