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. Author manuscript; available in PMC: 2010 Apr 15.
Published in final edited form as: Ann N Y Acad Sci. 2008;1129:119–129. doi: 10.1196/annals.1417.015

FIGURE 1.

FIGURE 1

Relationships between global brain metabolism and awareness. The link between global brain energy consumption and awareness is complex. Evidence exists that both states of extremely low and extremely high global brain metabolism are associated with small amounts of awareness. An intermediate level of brain metabolism, corresponding to a proper balance between inhibitory and excitatory neural activity, seems to be necessary to allow the genesis of awareness.