Analog VLSI-based modeling of the primate oculomotor system
Neural Computation
A Smart-Scanning Analog VLSI Visual-Attention System
Analog Integrated Circuits and Signal Processing - Special issue on selected papers from ECS '97
Analog VLSI Excitatory Feedback Circuits for AttentionalShifts and Tracking
Analog Integrated Circuits and Signal Processing
Intelligent Robot Vision Sensors in VLSI
Autonomous Robots
A Two-Dimensional, Object-Based Analog VLSI Visual Attention System
ARVLSI '99 Proceedings of the 20th Anniversary Conference on Advanced Research in VLSI
Modeling Selective Attention Using a Neuromorphic Analog VLSI Device
Neural Computation
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In this paper we present analog very large-scale integrated (aVLSI) circuits that facilitate the selection process for initiating and mediating attentive visual processing. We demonstrate the performance of these circuits within a system that implements covert attentional shifts based on an input array that represents saliency across the visual field. The selection process, which enables the transition from preattentive to attentive processing, uses knowledge of previous selections and appropriate duration of selec- tions to perform its task. The circuitry uses local feedback to create a hysteretic effect in the switching from one loca tion of attention to the next. We also include an inhibition- of-return mechanism to facilitate shifting the location of attention even when the input array remains constant. We present test data from a one-dimensional version of the system.