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Shift- and Stretch-Invariant Non-Negative Matrix Factorization with an Application to Brain Tissue Delineation in Emission Tomography Data

Dynamic neuroimaging data, such as emission tomography measurements of radiotracer transport in blood or cerebrospinal fluid, often exhibit diffusion-like properties. These …

anders-s.-olsen

Psilocybin Acutely Reduces Low-Frequency BOLD Power and Frequency-Specific Connectivity

Psilocybin and other serotonergic drugs acutely alter human brain function and large-scale connectivity as measured with BOLD fMRI, but whether these effects are frequency-specific …

anders-s.-olsen

Psychedelics Distinctly Alter Brain Entropy and Complexity Compared to Psychostimulants

Classical psychedelics have regained interest for their potential to treat psychiatric and neurological disorders, and explore neural mechanisms supporting perception, cognition, …

k.-larsen

Uncovering Dynamic Human Brain Phase Coherence Networks

Complex behavioral and cognitive processes emerge from coordinated communication between sometimes disparate brain regions, implying a systems-level dynamic synchronization of …

anders-s.-olsen

Navigating the Chaos of Psychedelic fMRI Brain-Entropy via Multi-Metric Evaluations of Acute Psilocybin Effects

A prominent theory of psychedelics is that they increase brain entropy. Twelve studies have evaluated psychedelic effects on fMRI brain entropy quantifications, no findings have …

drummond-e.-wen-mcculloch