TR: Synchronization, Coherence-Detection and Three-Dimensional Vision

[Rolf D. Henkel]

Dear Connectionists,

I'd like to invite you to download the technical report 

Title: Synchronization, Coherence-Detection and Three-Dimensional Vision
Author: Rolf D. Henkel, Institute for Theoretical Physics

ABSTRACT:
A new functional role for spiking neurons is  proposed, considered
necessary to convert noisy sensory data into meaningful and stable perceptions.
Percept creation and validation is performed by a dynamical process of
coherence detection between neural signals. The crucial operational step of
the network is the interaction of neural oscillators in the weak-coupling
limit, which realizes coherence detection dynamically by selective
synchronization of neural responses. A robust estimate of the incoming signals
is transmitted as modulation frequency of the output current of the
coherence-detecting layer, and a validation measure is given by the modulation
depth of this current. As a real world example of these ideas, a neural network
is presented solving the task of stereo vision with real image data. It
combines operations of time-averaging, rate-coding neurons with
integrate-and-fire-neurons,  which calculate a disparity map of a scene by
partially synchronizing their spike trains. 

The report is available on my website, as 

1) PostScript		
http://axon.physik.uni-bremen.de/research/papers/coherence.ps.gz

2) PDF-File
http://axon.physik.uni-bremen.de/research/papers/coherence.pdf

3) HTML, online
http://axon.physik.uni-bremen.de/research/papers/coherence/

Comments and remarks are very welcome.

Regards,
Rolf Henkel

--
Dr. Rolf Henkel			Institute for Theoretical Neurophysics
University Bremen		Kufsteiner Strae 1, D-28359 Bremen
Phone: 	+49-421-218-3688	henkel at physik.uni-bremen.de	
Fax:	+49-421-218-4869	http://axon.physik.uni-bremen.de/