Poster D77, Monday, March 26, 8:00-10:00 am, Exhibit Hall C
The effects of deep breathing on EEG during a flanker distractor interference task in children: A comparison between a lo-res consumer-grade and hi-res medical-grade system
Kiat Hui Khng1; 1National Institute of Education, Nanyang Technological University
The recent years have seen increasing interest in educational neuroscience. However, the use of EEG outside of laboratory settings, such as in schools, has been limited by the costs and physical constraints of conventional hi-res medical grade EEG systems. The present study compares EEG results obtained using the consumer-grade Emotiv EPOC+ against the medical-grade Neurostyle system in a pilot study investigating the effects of deep breathing on inhibitory control of attention in children. Data was collected in schools from 46 right-handed 11-year-olds, split between Emotiv and Neurostyle groups. All participants completed a computerized flanker task twice, once with a deep breathing practice and once without. A subset of participants also wore a BioSemi respiration belt. Results indicated no behavioral differences (accuracy, RT) in task performance between the groups; differences in results from the two systems are not confounded by differences in performance. Deep breathing significantly lowered respiratory rate. Common sites across systems showed generally similar ERP waveforms, with more standard and distinct waveforms from the Neurostyle, and greater noise and peculiarities from the Emotiv. The typical N2, P3, and LPC components were respectively observed over the frontal, parietal, and the frontal/anterior-frontal area. Preliminary ERP analyses conducted on the systems separately shows that the Neurostyle system was more sensitive at picking up the effects of the deep breathing intervention, although the Emotiv was also able to detect some effects, especially in the frontal/anterior-frontal area. Findings suggest that the lo-res consumer-grade EEG system may potentially be useful for school-based educational neuroscience research.
Topic Area: METHODS: Electrophysiology