Université de Fribourg

Diversity of cortico-descending projections: histological and diffusion MRI characterization in the monkey

Innocenti, Giorgio M. ; Caminiti, Roberto ; Rouiller, Eric M. ; Knott, Graham ; Dyrby, Tim B. ; Descoteaux, Maxime ; Thiran, Jean-Philippe

In: Cerebral Cortex, 2018, p. -

The axonal composition of cortical projections originating in premotor, supplementary motor (SMA), primary motor (a4), somatosensory and parietal areas and descending towards the brain stem and spinal cord was characterized in the monkey with histological tract tracing, electron microscopy (EM) and diffusion MRI (dMRI). These 3 approaches provided complementary information. Histology provided...

Université de Fribourg

The crossed projection to the striatum in two species of monkey and in humans: behavioral and evolutionary significance

Innocenti, Giorgio M. ; Dyrby, Tim B. ; Andersen, Kasper Winther ; Rouiller, Eric M. ; Caminiti, Roberto

In: Cerebral Cortex, 2017, vol. 27, no. 6, p. 3217–3230

The corpus callosum establishes the anatomical continuity between the 2 hemispheres and coordinates their activity. Using histological tracing, single axon reconstructions, and diffusion tractography, we describe a callosal projection to n caudatus and putamen in monkeys and humans. In both species, the origin of this projection is more restricted than that of the ipsilateral projection. In...