Cortical closed-loop brain-machine interface requires biomimetic sensory feedback - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2020

Cortical closed-loop brain-machine interface requires biomimetic sensory feedback

Luc Estebanez
Henri Lassagne
D. E Shulz
Valérie Ego

Résumé

New and improved neuroprosthetics offer great hope for motor-impaired human patients to regain autonomy. One obstacle facing current technologies is that fine motor control requires near-instantaneous somatosensory feedback. The way forward is to artificially recreate the rich, distributed feedback generated by natural movements. Here, we hypothesize that 20 incoming sensory feedback needs to follow biomimetic rules in order to be efficiently integrated by motor circuits. We have developed a rodent closed-loop brain-machine interface where head-fixed mice were trained to control a virtual cursor by modulating the activity of motor cortex neurons. Artificial feedback consisting of precise optogenetic stimulation patterns in the primary somatosensory cortex coupled to the motor cortical activity was provided online to the 25 animal. We found that learning occurred only when the feedback had a topographically biomimetic structure. Shuffling the spatiotemporal organization of the feedback prevented learning the task. These results suggest that the patterns of inputs that are structured by the body map present in the primary somatosensory cortex of all mammals are essential for sensorimotor processing and constitute a backbone that needs to be considered when 30 optimizing artificial sensory feedback for fine neuroprosthetic control.
Fichier principal
Vignette du fichier
Abbas_et_al_Biorxiv.pdf (2.1 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02998734 , version 1 (10-11-2020)

Identifiants

Citer

Aamir Abbasi, Luc Estebanez, Dorian Goueytes, Henri Lassagne, D. E Shulz, et al.. Cortical closed-loop brain-machine interface requires biomimetic sensory feedback. 2020. ⟨hal-02998734⟩
123 Consultations
120 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More