Extended Data Fig. 6: Sensor space within subject analysis: The influence of pre-stimulus alpha power on perceptual sensitivity and bias.
From: The role of alpha oscillations in temporal binding within and across the senses
Supplementary Fig. 6 Because alpha power and frequency are intimately related, we assessed the effect of pre-stimulus power on d’ and Biascentre. a, b, Perceptual sensitivity (a, across-participants’ mean ± 1 within-subject SEM) and bias (b, across-participants’ mean ± 1 within-subject SEM) are shown for low (1st tercile, orange) and high (3rd tercile, purple) pre-stimulus alpha power across pre-stimulus time in experimental design (rows) x sensory context (columns). We observed no significant effect of pre-stimulus alpha power on perceptual sensitivity and only one significant effect for bias in the 1 sound condition of the ‘yes-no threshold’ experiment (p = 0.011). Bayes factors (BF) show the evidence for HA relative to H0 plotted on a log10-scaled ordinate. Purple lines indicate thresholds for moderate evidence favouring H0 (< 1/3) or Ha (> 3)77. SEM, Standard error of the mean.
