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. 1996 Nov 15;16(22):7308–7317. doi: 10.1523/JNEUROSCI.16-22-07308.1996

Fig. 1.

Fig. 1.

Elimination of blink reflex hyperexcitability by a microinjection of bicuculline into the superior colliculus of an alert rat with a 6-OHDA lesion of the right ascending mesotelencephalic dopamine system. Each trace is the average of 10 rectified OOemg responses to a pair of stimuli to the left supraorbital branch of the trigeminal nerve (LSO) separated by 50 msec. A, C, The left records are from the left lid OOemg (LOOemg), the direct response, and the (B, D)right records are consensual, right lid OOemg (ROOemg) responses. A, B, The top records are before microinjection of bicuculline (Pre Bicuculline). C, D, The bottom records are after a microinjection of 1 μg of bicuculline into the right superior colliculus.LOOemg, Left orbicularis oculi response;LSO, left supraorbital nerve stimulation;R1, short-latency response; R2, long-latency response; ROOemg, right orbicularis oculi emg.