Université de Fribourg

Fine manual dexterity assessment after autologous neural cell ecosystem (ANCE) transplantation in a non-human primate model of parkinson’s disease

Borgognon, Simon ; Cottet, Jérôme ; Moret, Véronique ; Chatagny, Pauline ; Carrara, Laura ; Fregosi, Michela ; Bloch, Jocelyne ; Brunet, Jean-François ; Rouiller, Eric M. ; Badoud, Simon

In: Neurorehabilitation and Neural Repair, 2019, vol. 33, no. 7, p. 553–567

Autologous neural cell ecosystem (ANCE) transplantation improves motor recovery in MPTP monkeys. These motor symptoms were assessed using semi-quantitative clinical rating scales, widely used in many studies. However, limitations in terms of sensitivity, combined with relatively subjective assessment of their different items, make inter-study comparisons difficult to achieve. Objective. The...

Université de Fribourg

Effects of dorsolateral prefrontal cortex lesion on motor habit and performance assessed with manual grasping and control of force in macaque monkeys

Badoud, Simon ; Borgognon, Simon ; Cottet, Jérôme ; Chatagny, Pauline ; Moret, Véronique ; Fregosi, Michela ; Kaeser, Mélanie ; Fortis, Ekaterina ; Schmidlin, Eric ; Bloch, Jocelyne ; Brunet, Jean-François ; Rouiller, Eric M.

In: Brain Structure and Function, 2017, vol. 222, no. 3, p. 1193–1206

In the context of an autologous adult neural cell ecosystem (ANCE) transplantation study, four intact adult female macaque monkeys underwent a unilateral biopsy of the dorsolateral prefrontal cortex (dlPFC) to provide the cellular material needed to obtain the ANCE. Monkeys were previously trained to perform quantitative motor (manual dexterity) tasks, namely, the “modified-Brinkman...

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

Refined methodology for implantation of a head fixation device and chronic recording chambers in non-human primates

Lanz, Florian ; Lanz, X. ; Scherly, A. ; Moret, Véronique ; Gaillard, A. ; Gruner, P. ; Hoogewoud, Henri-Marcel ; Belhaj-Saif, Abderraouf ; Loquet, Gérard ; Rouiller, Eric M.

In: Journal of Neuroscience Methods, 2013, vol. 219, no. 2, p. 262–270

The present study was aimed at developing a new strategy to design and anchor custom-fitted implants, consisting of a head fixation device and a chronic recording chamber, on the skull of adult macaque monkeys. This was done without the use of dental resin or orthopedic cement, as these modes of fixation exert a detrimental effect on the bone. The implants were made of titanium or tekapeek and...

Université de Fribourg

Multisensory integration in non-human primates during a sensory-motor task

Lanz, imageFlorian ; Moret, Véronique ; Rouiller, Eric M. ; Loquet, Gérard

In: Frontiers in Human Neuroscience, 2013, vol. 7, p. 799

Daily our central nervous system receives inputs via several sensory modalities, processes them and integrates information in order to produce a suitable behavior. The amazing part is that such a multisensory integration brings all information into a unified percept. An approach to start investigating this property is to show that perception is better and faster when multimodal stimuli are used...

Université de Fribourg

Distinction between hand dominance and hand preference in primates: a behavioral investigation of manual dexterity in nonhuman primates (macaques) and human subjects

Chatagny, Pauline ; Badoud, Simon ; Kaeser, Mélanie ; Gindrat, Anne-Dominique ; Savidan, Julie ; Fregosi, Michela ; Moret, Véronique ; Roulin, Christine ; Schmidlin, Eric ; Rouiller, Eric M.

In: Brain and Behavior, 2013, vol. 3, no. 5, p. 575–595

The present study aimed to determine and confront hand preference (hand chosen in priority to perform a manual dexterity task) and hand dominance (hand with best motor performance) in eight macaques (Macaca fascicularis) and in 20 human subjects (10 left-handers and 10 right-handers).Methods: Four manual dexterity tests have been executed by the monkeys, over several weeks during learning and...