Université de Fribourg

Distant heterotopic callosal connections to premotor cortex in non-human primates

Lanz, Florian ; Moret, Véronique ; Ambett, R. ; Cappe, Céline ; Rouiller, Eric M. ; Loquet, Gérard

In: Neuroscience, 2017, vol. 344, p. 56–66

Cortico-cortical connectivity has become a major focus of neuroscience in the last decade but most of the connectivity studies focused on intrahemispheric circuits. Little has been reported about information acquired and processed in the premotor cortex and its functional connection with its homotopic counterpart in the opposite hemisphere via the corpus callosum. In non-human primates...

Université de Fribourg

Multisensory facilitation of behavior in monkeys: effects of stimulus intensity

Cappe, Céline ; Murray, Micah M. ; Barone, Pascal ; Rouiller, Eric M.

In: Journal of Cognitive Neuroscience, 2010, vol. 22, no. 12, p. 2850-2863

Multisensory stimuli can improve performance, facilitating RTs on sensorimotor tasks. This benefit is referred to as the redundant signals effect (RSE) and can exceed predictions on the basis of probability summation, indicative of integrative processes. Although an RSE exceeding probability summation has been repeatedly observed in humans and nonprimate animals, there are scant and inconsistent...

Université de Fribourg

The thalamocortical projection systems in Primate : an anatomical support for multisensory and sensorimotor interplay

Cappe, Céline ; Morel, Anne ; Barone, Pascal ; Rouiller, Eric M.

In: Cerebral Cortex, 2009, vol. 19, no. 9, p. 2025-2037

Multisensory and sensorimotor integrations are usually considered to occur in superior colliculus and cerebral cortex, but few studies proposed the thalamus as being involved in these integrative processes. We investigated whether the organization of the thalamocortical (TC) systems for different modalities partly overlap, representing an anatomical support for multisensory and sensorimotor...

Université de Fribourg

Thalamocortical and the dual pattern of corticothalamic projections of the posterior parietal cortex in macaque monkeys

Cappe, Céline ; Morel, Anne ; Rouiller, Eric M.

In: Neuroscience, 2007, vol. 146, no. 3, p. 1371-1387

The corticothalamic projection includes a main, modulatory projection from cortical layer VI terminating with small endings whereas a less numerous, driving projection from layer V forms giant endings. Such dual pattern of corticothalamic projections is well established in rodents and cats for many cortical areas. In non-human primates (monkeys), it has been reported for the primary sensory...