A directionally-selective neuromorphic circuit based on reciprocal synapses in Starburst Amacrine Cells.
Annu Int Conf IEEE Eng Med Biol Soc
; 2011: 5674-7, 2011.
Article
en En
| MEDLINE
| ID: mdl-22255627
ABSTRACT
Starburst Amacrine Cells (SACs) play a major role in the detection of directional motion in the biological retina. The starburst amacrine cell has intrinsic electrical mechanisms for producing directional selectivity (DS). GABA transmitter-receptor interactions between two overlapping SACs make DS more robust. We present a compartmentalized CMOS neuromorphic circuit that models a portion of two biological starburst amacrine cells in the retina and includes a simplified model of reciprocal interaction between the dendritic branches of SACs. We demonstrate that a neuromorphic circuit incorporating the reciprocal synapses enhances the responses in the neuromorphic dendritic tip and generates robust directional selectivity.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Sinapsis
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Potenciales de Acción
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Transmisión Sináptica
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Células Amacrinas
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Dendritas
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Modelos Neurológicos
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Red Nerviosa
Límite:
Animals
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Humans
Idioma:
En
Año:
2011
Tipo del documento:
Article