Accession Number:

ADA256040

Title:

Design and Hardware Implementation of Neural Systems.

Descriptive Note:

Final rept. 1 Oct 1988-30 Sep 1991,

Corporate Author:

PENNSYLVANIA UNIV PHILADELPHIA SCHOOL OF MEDICINE

Personal Author(s):

Report Date:

1991-12-15

Pagination or Media Count:

7.0

Abstract:

This project had two major aims. One was the design and computer simulation of specific neural circuits modeled after the early vision system of higher vertebrates. The second aim was the design and construction of electronic analog neural systems that could be used for implementing such a vision system and possibly other neural systems. Our initial approach to the hardware implementation was to build an entirely hardwired system using VLSI assemblies of electronic neurons and separate resistive synapse connection matrices fabricated by CVD deposition of amorphous silicon. During further simulation studies of the vision system it became clear that at this early state of development a completely hardwired system would be too restrictive and for this reason we felt that we needed a system that would incorporate modifiable synapses and a programmable connection architecture.

Subject Categories:

  • Anatomy and Physiology
  • Electrical and Electronic Equipment
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE