Brain activity fluctuates continuously, even in the absence of changes in sensory input or
motor output. These intrinsic activity fluctuations are correlated across brain regions and are …

Fine-grained descriptions of brain connectivity are required to understand how neural
information is processed and relayed across spatial scales. Previous investigations of the …

Fluctuations in arousal, controlled by subcortical neuromodulatory systems, continuously
shape cortical state, with profound consequences for information processing. Yet, how …

Influential theories postulate distinct roles of catecholamines and acetylcholine in cognition
and behavior. However, previous physiological work reported similar effects of these …

Placing a patient in a state of anaesthesia is crucial for modern surgical practice. However,
the mechanisms by which anaesthetic drugs, such as propofol, impart their effects on …

Neuronal oscillations are commonly analyzed with power spectral methods that quantify
signal amplitude, but not rhythmicity or 'oscillatoriness' per se. Here we introduce a new …

Dopamine (DA) modulates corticostriatal connections. Studies in which imaging of the DA
system is integrated with functional imaging during cognitive performance have yielded …

There is growing interest in how neuromodulators shape brain networks. Recent
neuroimaging studies provide evidence that brainstem arousal systems, such as the locus …

Attending to targets in a detection task can facilitate memory for concurrently presented
information, a phenomenon known as the attentional boost effect. One account of the …

Arousal is a potent mechanism that provides the brain with functional flexibility and
adaptability to external conditions. Within the wake state, arousal levels driven by activity in …