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Effects of exposure on tuning. Tuning widths in the left (solid bars) and right (striped bars) hemispheres for birds exposed to either CONENV(black) or HETENV (red) for 9 consecutive days are shown. Tuning width is significantly narrower in birds exposed to HETENV compared to CONENV (F(1, 304)=5.6451, P<0.018) but there was no effect of hemisphere. Error bars represent SEM. Asterisks denote significant main effects.
