Mechanisms of right-hemisphere dominance in identifying rapidly presented letters and digits

To produce „attentional blinks“, two target stimuli (T1 and T2) are embedded in rapidly presented series of letters. Modifying this paradigm, two simultaneous series (10 letters/s) were run, left and right from fixation. T1 was a red letter, T2 a black digit. When T1 and T2 occurred in different series, identification performance of T2 was extremely asymmetric: 80% if T2 came left (processed by the right hemisphere), but only 50% if T2 came right. In three experiments, mechanisms of this right-hemisphere dominance were revealed by EEG recordings from the scalp overlying visual cortex: When T1 was on the left sid…