EEG signature of grouping strategies in numerosity perception

<strong>Behavioral Data</strong> The excel file contains for each row data from individual participant. We reported the average response (columns B-E) and precision index (Weber fractions; columns G-J) for 6 and 8 items, both grouped and ungrouped. <strong>EEG Data</strong> The excel file contains for each row data from individual participant. We reported the N1 latency (columns B-K), N1 amplitude (columns M-V) and P2p amplitude (columns X-AG). Values are reported for the subitizing range (3 and 4 items) and the estimation range (6 and 8 items). In the estimation range values are separately reported for spatial arrangement (grouped and ungrouped) and number of subgroups (3 or 4 subgroups).