Visualization of Event-Related Changes in Brain Networks During Attention-Demanding Tasks

Abstract

Attention is the primary cognitive process to induce a response to a stimulus, and maintaining the attentive state continuously for a prolonged period of time is known as sustained attention, which is vital for performing any task. This study aims at visualizing the event-related changes in brain networks during attention demanding task with the help of electroencephalography (EEG) recordings. The results showed significant increase (p<0.05) in relative theta and gamma power during task compared to rest time, whereas in alpha band the relative power was significantly higher (p<0.05) during rest when compared to task. The event-related synchronization (ERS) and event-related desynchronization (ERD) in relative theta power and relative alpha power respectively was observed particularly in the parietal cognitive processing electrodes. The study concludes that theta synchronization and alpha desynchronization noted at parietal cortex that is associated with attention resulted in improving the task performance with minimal errors.