have identified an overlapping infant frequency band using a narrow frequency bin method in which narrow frequency bins (e.g., 0.4 Hz) are analyzed and frequency bands are determined by significant findings at adjacent bins. Specifically, the 5.2–9.6 Hz band in 8- to 11-month-old infants exhibits changes in power values at occipital sites during the absence of visual input (i.e., a “lights off” period) that is analogous to changes exhibited by adult 8–13 Hz alpha band during an eyes closed period (Stroganova et al., 1999). Thus, the 6–9 Hz band has been identified by independent investigations, using different approaches, as the dominant frequency band during early development.
