Rafael M F de Araújo, Leonardo Mazzochi, Diogo R Lara, Gustavo L Ottoni
Thinking about dying and trying and intending to die: results on suicidal behavior from a large Web-based sample
The Journal of clinical psychiatry
review systematize discuss models diffusion neuronal tissue putting overarching physical context coarsegraining increasing diffusion length scale perspective view research quantifying brain microstructure occurring along three major avenues first avenue focusses transient timedependent effects diffusion effects signify gradual coarsegraining tissue structure occurs qualitatively differently different brain tissue compartments show transient effects contain information relevant length scales neuronal tissue packing correlation length neuronal fibers well degree structural disorder along neurites second avenue corresponds longtime limit observed signal approximated sum multiple nonexchanging anisotropic gaussian components challenge lies parameter estimation resolving hidden degeneracies third avenue employs multiple diffusion encoding techniques able access information contained conventional diffusion propagator conclude outlook future directions could open exciting possibilities designing quantitative markers tissue physiology pathology based methods studying mesoscopic transport disordered systems