“…Lower values of coherence are associated with white matter lesions and decreased cerebral blood flow (Leuchter, Cook, Uijtdeharge, Dunkin, Lufkin, Anderson-Hanley, Abrams, Rosenberg-Thompson, O'Hara, Simon, Osato, & Babaie, 1997), schizophrenia (Wada, Nanbu, Kikuchi, Koshino, Hashimoto, & Yamaguchi, 1998), depression (Leuchter et al, 1997), and normal aging (Koyama, Hirasawa, Okubo, & Karasawa, 1997). Higher values of coherence have been interpreted as evidence for functional coupling (Thatcher, Krause, & Hrybyk, 1986), information exchange (Petsche et al, 1988), or functional coordination (Gevins, Bessler, Morgan, Cutillo, White, Greer, & Illes, 1989) between brain regions. Higher beta coherence correlates with inhibition processes in Go/No Go tasks (Shibata et al, 1997) and in self-paced finger movements (Leocani, Toro, Manganotti, Zhuang, & Hallett, 1997).…”