For each measure analysis: O2, Oz, O1, POz, P8, P4, Pz, P3, P7, CP6, CP2, CP1, CP5, T8, C4, Cz, C3, T7, FC6, FC2, FC1, FC5, F8, F4, Fz, PubMed ID:http://www.ncbi.nlm.nih.gov/pubmed/21374391 F3, F7, Fp2,The first noticeable ERP component referenced for the earlobe elicited just after the onset of your VR-animation was the P120 element recorded in occipito-parietal electrodes. Analysis revealed a peak reduction in Upside-down situation with respect to Normal condition over occipito-parietal regions. The next element was the N170 mainly recorded more than the occipito-parietal regions (Figure 2). We observed a MedChemExpress PZ-51 substantial decrease in Uncoordinated condition over occipital and parieto-lateral regions. This was followed by a large P300 component ending at about 500 ms in occipital regions and 400 ms in frontal regions. In an effort to simplify the description of condition effect, we 
subdivided P300 in the two classical P300a and P300b elements (Figure 2). The P300a element was drastically smaller inside the Upside-down condition more than parietal regions with respect to the Typical scenario, whereas the P300b component remained the same. On the contrary within the Uncoordinated situation, the P300a component was not modified whereas the P300b showed a considerable lower in occipital and parietal regions (Table 1). Comparison amongst Random and No-Random group revealed no important difference in between their respective situations except inside the P300 amplitude in parietal area which was greater for the No-Random group for the 3 circumstances.EVENT-RELATED SPECTRAL PERTURBATION AND INTER-TRIAL COHERENCEWhatever the observed situation (Figures 3), the video onset triggered all through the scalp a theta ERS in the [0; 500] ms interval followed by an alpha ERD initiated at about 200 ms and maintained through each of the duration in the video. This alpha ERD was accompanied by a beta ERD which was far more pronounced within the Uncoordinated condition (Figure five). The Regular presentation induced a gamma ERD at about 700 ms and maintained for all the duration from the video inside the left sensori-motor region (Figure 3, CP5 electrode). This gamma ERD was not present within the two other people circumstances (Figures 4, five). In the [-200;600] ms time-window, the Normal situation was characterized by the following observations (Figures 6): (1) at the latency with the P120, ERSP plots showed an earlier alpha ERS reaching maximal value within the parietal area and extending for the beta band in the parieto-central area. (2) This was sustained by theta activation and phase-locking presenting its maximal value at about 200 ms. (three) ERD in the upper alpha band at about 200 ms inside the occipito-parietal regions. (four) ERS clusters in the gamma variety (300 Hz) in the parieto-occipital and centro-frontal regions.Frontiers in Systems Neurosciencewww.frontiersin.orgSeptember 2014 Volume 8 Short article 169 Zarka et al.Neural oscillations throughout walking observationFIGURE two ERP evoked by animation onset in every situation. ERP recorded in O1, O2, P3, and P4 electrodes. In middle portion, the ERP evoked by the normal animation onset show 3 successive potentials: P120, N170, and P300a,b. In upper part, the blue andred lines show respectively the ERP response inside the Standard and Upside-down condition. In reduce portion, the blue and red lines show respectively the ERP response in the Standard and Uncoordinated conditions. Substantial differences are mark by asterisks (p 0.05).With respect for the Standard situation, inside the Upside-down condition, three significant adjustments have been noted (Figures.