Using gradient‐echo echo‐planar MRI, a local signal increase of 4.3±0.3% is observed in
the human brain during task activation, suggesting a local decrease in blood …

Neuronal activity causes local changes in cerebral blood flow, blood volume, and blood
oxygenation. Magnetic resonance imaging (MRI) techniques sensitive to changes in …

An MRI time course of 512 echo‐planar images (EPI) in resting human brain obtained every
250 ms reveals fluctuations in signal intensity in each pixel that have a physiologic origin …

Functional activation maps of the human visual cortex were obtained at a spatial resolution
almost two orders of magnitude better than achievable by positron emission tomography …

The nature of changes in rapidly acquired magnetic resonance images of the brain was
studied by using a denoising method and spectral techniques optimally suited to short time …

Functional magnetic resonance imaging (fMRI) is a widely used technique for generating
images or maps of human brain activity. The applications of the technique are widespread in …

There is considerable interest in the use of MR imaging to study brain function. Recently, it
has been demonstrated that small changes in signal intensity occur in the visual cortex in T …

Functional magnetic resonance imaging (fMRI) is capable of detecting task‐induced blood
oxygenation changes using susceptibility sensitive pulse sequences such as gradient …

Functional activation of the human brain can be visualized with magnetic resonance (MR)
imaging, but most studies so far have used echo-planar imaging or magnetic fields of 2 T …

Functional magnetic resonance imaging (fMRI) is a tool for mapping brain function that
utilizes neuronal activity-induced changes in blood oxygenation. An efficient three …