Measuring & Modulating Hemispheric Attention
This dissertation presents a novel behavioral task of lateralized attention: the speeded Lateralized Attention Network Task (sLANT) and establishes behavior and ERP features of single and multiple test administration. In addition, EEG Biofeedback was implemented in a double-blind, randomized, placebo controlled experiment contrasting the effects of EEG training protocols on hemispheric attention as measured by the sLANT. EEG Biofeedback mechanisms were also investigated. Protocols were selected to contrast training hemisphere (C3 vs C4) and reward frequency (SMR: 12-15 Hz, Beta: 15-18 Hz) with active placebo training. Significant protocol by session effects on performance Accuracy and ERP features demonstrate EEG Biofeedback has an effect beyond "Sham", has specific protocol effects by training hemisphere and frequency, and can be successfully blinded in a research context.