Conjunction search using a 1-D, analog VLSI-based, attentional search/tracking chip

Timothy Horiuchi, Ernst Niebur

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The ability of animals to select a limited region of sensory space for scrutiny is an important factor in dealing with cluttered or complex sensory environments. Such an «attentional» system in the visual domain is believed to be involved in both the perception of objects and the control of eye movements in primates. While we can intentionally guide our attention to perform a specific task, it is also reflexively drawn to «salient» features in our sensory input space. Understanding how high-level task information and lour-level stimulus information can combine to control our sensory processing is of great interest to both neuroscience and engineering. Towards this end, we have designed and fabricated a one-dimensional, analog VLSI vision chip that models covert attentional search and tracking. We extend previous analog VLSI work (Morris and DeWeerth, 1997) on the delayed onset of inhibition in a winner-take-all network to now use extracted image edges as input to the attentional saliency map and to perform serial search on a particular feature conjunction (spatial derivative and the direction-of-motion). We further demonstrate the ability to modify the circuit's parameters «on-the-fly» to switch between a search mode and a tracking mode.

Original languageEnglish (US)
Title of host publicationProceedings - 20th Anniversary Conference on Advanced Research in VLSI, ARVLSI 1999
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages276-290
Number of pages15
ISBN (Electronic)0769500560, 9780769500560
DOIs
StatePublished - Jan 1 1999
Event1999 Conference on Advanced Research in VLSI, ARVLSI 1999 - Atlanta, United States
Duration: Mar 21 1999Mar 24 1999

Other

Other1999 Conference on Advanced Research in VLSI, ARVLSI 1999
CountryUnited States
CityAtlanta
Period3/21/993/24/99

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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    Horiuchi, T., & Niebur, E. (1999). Conjunction search using a 1-D, analog VLSI-based, attentional search/tracking chip. In Proceedings - 20th Anniversary Conference on Advanced Research in VLSI, ARVLSI 1999 (pp. 276-290). [756054] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ARVLSI.1999.756054