PIETTE, Charlotte; VANDECASTEELE, Marie; BOSCH BOUJU, Clementine; GOUBARD, Valerie; PAILLE, Vincent; CUI, Yihui; MENDES, Alexandre; PEREZ, Sylvie; VALTCHEVA, Silvana; XU, Hao Xu; POUGET, Pierre

doi:10.3389/fnsyn.2021.725880

PIETTE, Charlotte
Dynamics and Pathophysiology of Neuronal Networks Team / Dynamisme et physiopathologie des réseaux neuronaux

VANDECASTEELE, Marie
Dynamics and Pathophysiology of Neuronal Networks Team / Dynamisme et physiopathologie des réseaux neuronaux

BOSCH BOUJU, Clementine

Nutrition et Neurobiologie intégrée [NutriNeuro]
Dynamics and Pathophysiology of Neuronal Networks Team / Dynamisme et physiopathologie des réseaux neuronaux

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Frontiers in Synaptic Neuroscience. 2021-09-21 n° 13:725880

Résumé en anglais

Although many details remain unknown, several positive statements can be made about the laminar distribution of primate frontal eye field (FEF) neurons with different physiological properties. Most certainly, pyramidal neurons in the deep layer of FEF that project to the brainstem carry movement and fixation signals but clear evidence also support that at least some deep-layer pyramidal neurons projecting to the superior colliculus carry visual responses. Thus, deep-layer neurons in FEF are functionally heterogeneous. Despite the useful functional distinctions between neuronal responses in vivo, the underlying existence of distinct cell types remain uncertain, mostly due to methodological limitations of extracellular recordings in awake behaving primates. To substantiate the functionally defined cell types encountered in the deep layer of FEF, we measured the biophysical properties of pyramidal neurons recorded intracellularly in brain slices issued from macaque monkey biopsies. Here, we found that biophysical properties recorded in vitro permit us to distinguish two main subtypes of regular-spiking neurons, with, respectively, low-resistance and low excitability vs. high-resistance and strong excitability. These results provide useful constraints for cognitive models of visual attention and saccade production by indicating that at least two distinct populations of deep-layer neurons exist.< Réduire

Mots clés en anglais

Electrophysiology

Frontal Eye Field

Intrinsic Membrane Properties

Neuron Classification

Primate

Pyramidal Cells

Visual Cortex

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https://oskar-bordeaux.fr/handle/20.500.12278/124217

DOI

http://dx.doi.org/10.3389/fnsyn.2021.725880

Unités de recherche

NutriNeuro (Laboratoire de Nutrition et Neurobiologie Intégrée) - UMR 1286

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Intracellular Properties of Deep-Layer Pyramidal Neurons in Frontal Eye Field of Macaque Monkeys

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Résumé en anglais

Mots clés en anglais

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