Figure 5.

Prestimulus alpha power and temporary biases. We investigated whether prestimulus alpha power was also modulated by prolonged and short-term temporal recalibration. A, The trials in A200V and V200A conditions were either classified following (Ai) the adapted PSSs (PSS_A200V and PSS_V200A) or (Aii) the non-adapted PSS (PSS_no). The alpha power was computed according to biasness and correctness for these two classifications and averaged across the conjunction cluster derived from the ANOVA and the correlation analysis (Fig. 3A,C). A two-way ANOVA (factors: biasness, correctness) showed that the biasedness factor was significant only when trials were classified according to adapted PSSs (*p < 0.05; n.s., nonsignificant). B, A single-trial model was used to explain the response in the current trial N (respN) based on the current stimulus (stimN) and the previous response (respN-1). The coefficient estimates for each individual (black dots) and the mean across participants (red) are shown. C, The relationship between pre-trial N alpha power and the response of trial N-1 was investigated by splitting trials according to stimulus, response, or biasedness of the response in trials N-1. No significant clusters were found.