Raising the stakes for cortical visual prostheses.
J Clin Invest
; 131(23)2021 12 01.
Article
en En
| MEDLINE
| ID: mdl-34850741
ABSTRACT
In this issue of the JCI, the dream of restoring useful vision to blind individuals with neurotechnology moves one step closer to realization. Fernández et al. implanted an electrode array with 96 penetrating electrodes in the visual cortex of a blind patient who had been without light perception for 16 years due to optic neuropathy. Remarkably, the patient was able to perceive visual patterns created by passing current through array electrodes. The use of a penetrating electrode array meant that action potentials from single neurons could be recorded to study the neural response to stimulation. Compared with electrodes resting on the cortical surface, penetrating electrodes require one-tenth the current to create a visual percept. However, patterned electrical stimulation often fails to produce the expected percept for penetrating and surface electrode arrays, highlighting the need for further research to untangle the relationship between stimulus and perception.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Corteza Visual
/
Prótesis Visuales
Tipo de estudio:
Clinical_trials
Límite:
Humans
Idioma:
En
Revista:
J Clin Invest
Año:
2021
Tipo del documento:
Article