Functional interactions in hierarchically organized neural networks studied with spatiotemporal firing patterns and phase-coupling frequencies.

Details

Serval ID
serval:BIB_3E3CD0037D7E
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Functional interactions in hierarchically organized neural networks studied with spatiotemporal firing patterns and phase-coupling frequencies.
Journal
The Chinese Journal of Physiology
Author(s)
Perrig S., Iglesias J., Shaposhnyk V., Chibirova O., Dutoit P., Cabessa J., Espa-Cervena K., Pelletier L., Berger F., Villa A.E.
ISSN
0304-4920 (Print)
ISSN-L
0304-4920
Publication state
Published
Issued date
31/12/2010
Peer-reviewed
Oui
Volume
53
Number
6
Pages
382-395
Language
english
Notes
Publication types: Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Abstract
A scalable hardware/software hybrid module called Ubidule- endowed with bio-inspired ontogenetic and epigenetic features is configured to run a neural networks simulation with developmental and evolvable capabilities. We simulated the activity of hierarchically organized spiking neural networks characterized by an initial developmental phase featuring cell death followed by spike timing dependent synaptic plasticity in presence of background noise. An upstream 'sensory' network received a spatiotemporally organized external input and downstream networks were activated only via the upstream network. Precise firing sequences, formed by recurrent patterns of spikes intervals above chance levels, were observed in all recording conditions, thus suggesting the build-up of a connectivity able to sustain temporal information processing. The activity of a Ubinet -a network of Ubidules- is analyzed by means of virtual electrodes that recorded neural signals similar to EEG. The analysis of these signals was compared with a small set of human recordings and revealed common patterns of shift in quadratic phase coupling. The results suggest some interpretations of changes and plasticity of functional interactions between cortical areas driven by external stimuli and by learning/cognitive paradigms.
Keywords
Action Potentials/physiology, Electroencephalography, Humans, Learning/physiology, Neural Networks (Computer), Neuronal Plasticity/physiology, Sleep Initiation and Maintenance Disorders/physiopathology, Synapses/physiology, Synaptic Transmission/physiology, Time Factors
Pubmed
Web of science
Create date
04/08/2017 10:57
Last modification date
20/08/2019 14:34
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