Coding strategies in early stages of the somatosensory system

Authors:
Juan Navarro;Eduardo Sánchez;Antonio Canedo
Affiliations:
Departamento de Fisioloxía, Facultade de Medicina, Universidade de Santiago de Compostela, Santiago de Compostela, Spain;Grupo de Sistemas Intelixentes (GSI), Departamento de Electrónica e Computación, Facultade de Físicas, Universidade de Santiago de Compostela, Santiago de Compostela, Spain;Departamento de Fisioloxía, Facultade de Medicina, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
Venue:
IWINAC'05 Proceedings of the First international conference on Mechanisms, Symbols, and Models Underlying Cognition: interplay between natural and artificial computation - Volume Part I
Year:
2005

Citing 2
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Edge Detection and Motion Discrimination in the Cuneate Nucleus

ICANN '02 Proceedings of the International Conference on Artificial Neural Networks

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Abstract

This paper explores the information coding performed by the local circuit of the Cuneate Nucleus (CN). Based on physiological data, we have developed a realistic computational model and studied its output after presenting different types of plausible cutaneous stimuli. Computer simulations show that (1) static stimuli are encoded in progressive spatio-temporal patterns made up of single-spike trains generated by each stimulated neuron, and (2) moving stimuli are encoded with a bursting discharge of those units responding to the leading edge of the stimulus. These results suggest that the role of CN could be the transformation of the stimulus representation in order to facilitate both discrimination and classification in later processing stages.