Oscillatory gamma activity mediates the pathway from socioeconomic status to language acquisition in infancy

Representative subset of the raw infant EEG data included in the original manuscript.

Baseline EEG data were acquired from Italian infants at age six months and 15 days ( ± 2 weeks).
A 4-min block of baseline EEG was collected while a research assistant was blowing bubbles to engage infant’s attention.
The EEG was recorded from 60 scalp electrodes using Geodesic Sensor Net (Geodesic EEG System 300, Electrical Geodesics, Inc., Eugene, OR; USA), with impedances below 50 Hz. Vertex was used as an online reference. EEG was sampled at 250 Hz and bandpassfiltered (0.1–100 Hz) online. After recording, EEG data were exported for processing through lab-internal Matlab (MathWorks, Natick, MA) routines and EEGLAB toolbox (Delorme & Makeig, 2004).