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SILICON RETINA [1 record]

Record 1 2006-11-22

English

Subject field(s)
  • Simulation (Cybernetic Systems)
  • The Eye
DEF

A microchip based on the neural architecture of the eye.

CONT

Silicon retina. Neuromorphic circuits emulate the complex interactions that occur among the various retinal cell types by replacing each cell's axons and dendrites (signal pathways) with metal wires and each synapse with a transistor. Permutations of this arrangement produce excitatory and inhibitory interactions that mimic similar communications among neurons. The transistors and the wires that connect them are laid out on silicon chips. Various regions of the chip surface perform the functions of the different cell layers.

French

Domaine(s)
  • Simulation (Systèmes cybernétiques)
  • Oeil
CONT

Rétine de silicium. Des circuits imitent les interactions complexes reliant les différents types de cellules de la rétine en remplaçant chaque axone ou dendrite (les voies de signalisation) par un fil métallique, et chaque synapse par un transistor. Des permutations des connexions dans un tel circuit produisent des interactions excitatrices ou inhibitrices qui imitent la communication entre neurones. Les transistors et les fils de connexion sont disposés sur une puce en silicium. Différentes régions de la puce remplissent les fonctions des différentes couches de cellules.

Spanish

Campo(s) temático(s)
  • Simulación (Sistemas cibernéticos)
  • Ojo
DEF

Microcircuito basado en la arquitectura nerviosa del ojo.

CONT

Quizás el más prometedor de los dos sea la retina de silicio artificial (ASR) desarrollada por Optobionics. Es un dispositivo muy pequeño. Tiene 2 mm de diametro [...] permite ver a pacientes ciegos una imagen de 10 por 10 pixels, lo que es más o menos el tamaño de una letra.

OBS

ASR por sus siglas en inglés.

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