EEG functional connectivity analysis for the study of the brain maturation in the first year of life

This dataset is related to 146 typically developing infants who underwent baseline electrophysiological (EEG) data recording at 6 (T6) and 12 (T12) months of age. The recordings were made using a dense-array EGI system (Geodesic EEG System (GES) 300 or 400, Electric Geodesic, In., Eugene, Oregon, USA) equipped with 60/64-electrode or 128-electrode caps (HydroCel Geodesic Sensor net).Whole-brain functional connectivity (FC) metrics were extracted, for multiple frequency bands with the aim to evaluate brain maturation in the first year of life in terms of EEG functional connectivity. In addition, Bayley test was administered at 24 months of age to explore possible relation between brain network connectivity and cognitive functions.

The dataset includes subjects’ sociodemographic and individual factors (such as age, sex, socioeconomic status, gestational week and birth weight); functional connectivity metrics (such as the magnitude-squared coherence index, phase lag index (PLI), and parameters characterizing the minimum spanning tree built from the PLI index) computed in the delta (2-4 Hz), theta (4-6 Hz), low-alpha (6-9-Hz), high-alpha (9-13 Hz), beta (13-30 Hz) and gamma (30-45 Hz) frequency bands; and the Bayley test raw scores, assessed at 24 months of age. 

In particular, each row in the database corresponds to a subject and each column to a different variable.Column A, Subject code;Column B, Time point: 1 = data related to the EEG recording performed at six months of age; 2 = data related to the EEG recording performed at twelve months of age;Column C, Sex: 0= males; 1=females;Column D, Age (expressed in days) at T6;Column E, Age (expressed in days) at T12;Column F, Family socio-economic status;Column G, Gestational age expressed in weeks;Column H, Birth weight expressed in grams;Column I and J, Bayley Cognitive Composite Score and Griffiths developmental quotient both assessed at 6 months of age;Column K and L, Number of electrodes of the used electrode-caps for T6 and T12, respectively;Columns from M to BM, FC metrics for all frequency bands;Columns from BO to BQ, raw cognitive, receptive and expressive Bayley test scores assessed at 24 months of age;Column BR, Composite language metric derived from the expressive and receptive Bayley scores.

If you use this dataset please cite the following manucript: Falivene, A.; Cantiani, C.; Dondena, C.; Riboldi, E.M.; Riva, V.; Piazza, C. EEG Functional Connectivity Analysis for the Study of the Brain Maturation in the First Year of Life. Sensors 2024, 24, 4979. All details about subjects, data acquisition and signal processing pipeline are described in the manuscript.