REPEATED VISIBLE AND INVISIBLE ONSETS 2
Supplemental Materials
The Distracting Impact of Repeated Visible and Invisible Onsets on Focused Attention
by D. Pascucci & M. Turatto, 2015, JEP: Human Perception and Performance
http://dx.doi.org/10.1037/xhp0000025
Figure S1. Raw accuracy data (proportion of correct responses) for each condition of Experiments 1-9. Bars are 95% confidence intervals.
Figure S2. Results of the control experiments with fixation monitored by means of an Eyelink 1000 Tower Mount system (sampling rate: 1000 Hz; SR Research, Ontario, Canada). In these two experiments, participants were exposed to five (as in Experiment 3) and one (as in Experiment 2) supraliminal onsets during the execution of the main task at fovea. In the experiment with five onsets, participants’ performance did not vary as a function of onsets presence (p = 0.89) confirming the pattern observed in Experiment 3. In the experiment with one onset (synchronous with the target) participants’ performance was negatively affected when the onset was shown (p < 0.0005). Participants made an eye movement in less than 5% of the trials (data were discarded for the analysis). Bars are 95% confidence intervals.
Figure S3. Performance interference as a function of onsets number and first vs. second half of the experiments, for the subliminal (11%) and intermediate (26%) levels of contrast. Data of Experiments 4-7 (multiple onsets) and of Experiment 2 (single onset) are split between the first half (black-open squares) and the second half (filled-gray triangles) of the experiment. Subliminal and intermediate onsets did not affect visual performance, neither in the first half nor in the second half (all ps > 0.05) of the experiments. Bars are 95% confidence intervals.