Objective: To investigate the relation between atrophy of the hippocampal region and brain
functional patterns during episodic memory processing in Alzheimer's disease. Patients and …

There has been a dramatic increase in the number of studies using resting state functional
magnetic resonance imaging (rs-fMRI), a recent addition to imaging analysis techniques …

A number of recent studies of human brain activity using blood-oxygen-level-dependent
(BOLD) fMRI and EEG have reported the presence of spatiotemporal patterns of correlated …

BACKGROUND AND PURPOSE: In subjects performing no specific cognitive task (“resting
state”), time courses of voxels within functionally connected regions of the brain have high …

Recent blood oxygenation level dependent functional MRI (BOLD fMRI) studies of the
human brain have shown that in the absence of external stimuli, activity persists in the form …

Thirty patients with degenerative dementia underwent clinical evaluation,
neuropsychological testing, and single photon emission computed tomography (SPECT) …

Recent neuroimaging studies have lead to the proposal that rest is characterized by an
organized, baseline level of activity, a default mode of brain function that is suspended …

Purpose To explore the use of approximate entropy (ApEn) as an index of the complexity
and the synchronicity of resting state blood oxygenation level‐dependent (BOLD) functional …

The goals of this study were to evaluate brain activation in patients with probable
Alzheimer's disease (AD), mild cognitive impairment (MCI), and controls while performing a …

Functional MRI (fMRI) has uncovered widespread hemodynamic fluctuations in the brain
during rest. Recent electroencephalographic work in humans and microelectrode recordings …