title: Spontaneous fMRI activity during resting wakefulness and sleep.
abstract: Functional magnetic resonance imaging (fMRI) studies performed during both waking rest and sleep show that the brain is continually active in distinct patterns that appear to reflect its underlying functional connectivity. In this review, potential sources that contribute to spontaneous fMRI activity will be discussed.
authors.affiliation: Section for Advanced MRI, LFMI, NINDS, National Institutes of Health, Bethesda, MD, USA. jhd@helix.nih.gov
authors.forename: Jeff
authors.initials: J
authors.lastname: Duyn
mesh_terms: D001921:Brain / Q000033:anatomy & histology / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009415:Nerve Net / Q000033:anatomy & histology / Q000502:physiology; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*