SyNAPSE. SyNAPSE is a DARPA program that aims to develop electronic neuromorphic machine technology, an attempt to build a new kind of cognitive computer with form, function, and architecture similar to the mammalian brain.  Such artificial brains would be used in robots whose intelligence would scale with the size of the neural system in terms of the total number of neurons and synapses and their connectivity.

SyNAPSE is a backronym standing for Systems of Neuromorphic Adaptive Plastic Scalable Electronics. The name alludes to synapses, the junctions between biological neurons. The program is being undertaken by HRL Laboratories (HRL), Hewlett-Packard, and IBM Research.  In November 2008, IBM and its collaborators were awarded $4.9 million in funding from DARPA while HRL and its collaborators were awarded $5.9 million in funding from DARPA.  For the next phase of the project, DARPA added $16.1 million more to the IBM effort while HRL received an additional $10.7 million. In 2011, DARPA added $21 million more to the IBM project. and an additional $17.9 million to the HRL project. The SyNAPSE team for IBM is led by Dharmendra Modha, manager of IBM's cognitive computing initiative. The SyNAPSE team for HRL is led by Narayan Srinivasa, manager of HRL's Center for Neural and Emergent Systems.

The initial phase of the SyNAPSE program developed nanometer scale electronic synaptic components capable of adapting the connection strength between two neurons in a manner analogous to that seen in biological systems (Hebbian learning), and simulated the utility of these synaptic components in core microcircuits that support the overall system architecture.

Continuing efforts will focus on hardware development through the stages of microcircuit development, fabrication process development, single chip system development, and multi-chip system development. In support of these hardware developments, the program seeks to develop increasingly capable architecture and design tools, very large-scale computer simulations of the neuromorphic electronic systems to inform the designers and validate the hardware prior to fabrication, and virtual environments for training and testing the simulated and hardware neuromorphic systems.

Published product highlights
 clockless operation (event-driven), consumes 70 mW during real-time operation, power density of 20 mW/cm2
 manufactured in Samsung's 28 nm process technology, 5.4 billion transistors
 one million neurons and 256 million synapses networked into 4096 neurosynaptic cores by a 2D array, all programmable
 each core module integrates memory, computation, and communication, and operates in an event-driven, parallel, and fault-tolerant fashion

Participants
The following people and institutions are participating in the DARPA SyNAPSE program:

IBM team, led by Dharmendra Modha
 Stanford University: Brian A. Wandell, H.-S. Philip Wong
 Cornell University: Rajit Manohar
 Columbia University Medical Center: Stefano Fusi
 University of Wisconsin–Madison: Giulio Tononi
 University of California, Merced: Christopher Kello
 iniLabs GmbH: Tobi Delbruck 
 IBM Research: Rajagopal Ananthanarayanan, Leland Chang, Daniel Friedman, Christoph Hagleitner, Bulent Kurdi, Chung Lam, Paul Maglio, Dharmendra Modha, Stuart Parkin, Bipin Rajendran, Raghavendra Singh

HRL Team led by Narayan Srinivasa
 HRL Laboratories: Narayan Srinivasa, Jose Cruz-Albrecht, Dana Wheeler, Tahir Hussain, Sri Satyanarayana, Tim Derosier, Aleksey Nogin, Youngkwan Cho, Corey Thibeault, Michael O' Brien, Michael Yung, Karl Dockendorf, Vincent De Sapio, Qin Jiang, Suhas Chelian
 Boston University: Massimiliano Versace, Stephen Grossberg, Gail Carpenter, Yongqiang Cao, Praveen Pilly
 Neurosciences Institute: Gerald Edelman, Einar Gall, Jason Fleischer
 University of Michigan: Wei Lu
 Georgia Institute of Technology: Jennifer Hasler
 University of California, Irvine: Jeff Krichmar
 George Mason University: Giorgio Ascoli, Alexei Samsonovich
 Portland State University: Christof Teuscher
 Stanford University: Mark Schnitzer
 Set Corporation: Chris Long

See also
TrueNorth – IBM chip (introduced mid 2014) boasts of 1 million neurons and 256 million synapses (computing sense); 5.4 billion transistors and 4,096 neurosynaptic cores (hardware).
 Computational RAM is another approach bypassing the von Neumann bottleneck

References

External links
  Systems of Neuromorphic Adaptive Plastic Scalable Electronics
 Neuromorphonics Lab, Boston University
 Center for Neural and Emergent Systems Homepage
 HRL Labs Homepage

Neurotechnology
DARPA projects