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Background: The perceptual ability of humans and monkeys to identify objects in the
presence of noise varies systematically and monotonically as a function of how much noise …

Summary fMRI, one of the most important noninvasive brain imaging methods, relies on the
blood oxygen level-dependent (BOLD) signal, whose precise underpinnings are still not fully …

Human neuroscience research has changed dramatically with the proliferation and
refinement of functional magnetic resonance imaging (fMRI) technologies. The early years of …

Many fMRI experiments show regions of cortex that seem to respond in antiphase with the
primary stimulus. In this issue of Neuron, Shmuel et al. show that this" negative BOLD …

Laminar fMRI using the BOLD contrast enables the non-invasive investigation of
mesoscopic functional circuits in the human brain. However, the laminar neuronal activity is …

Negative BOLD signals that are synchronous with resting state fluctuations have been
observed in large vessels in the cortical sulci and surrounding the ventricles. In this study …

Functional magnetic resonance imaging (fMRI) has become the dominant means of
measuring behavior-related neural activity in the human brain. Yet the relation between the …

The six cortical layers have distinct anatomical and physiological properties, like different
energy use and different feedforward and feedback connectivity. It is not known if and how …

Over the last 20years, BOLD-FMRI has proved itself to be a powerful and versatile tool for
the study of the neural substrate underpinning many of our cognitive and perceptual …