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Experiment 2: Effects of exogenous attention on performance (d′) as a function of 2nd-order modulator contrast for the two low 2nd-order modulator spatial frequency texture conditions at 10 deg eccentricity (A: LL; B: HL). Both panels plot psychometric functions and parameter estimates (c50 and d′max) for each cueing condition (valid, neutral and invalid). Plotting conventions as in Fig. 4.
