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Mean (+ SEM) UR amplitude for both cannula hit (left) and miss (right) groups. UR amplitudes are shown across doses of picrotoxin and ACSF during tone-shock (T+) trials. Shading indicates ACSF or dose of picrotoxin (from left to right: ACSF, 1.0 mM, 2.0 mM, 4.0 mM).
