Principal Dynamic Mode Analysis of a Spider Mechanoreceptor Action Potentials

Georgios D. Mitsis, Spiros Courellis, Andrew S. French, Vasilis Z. Marmarelis

Résultat de recherche: Conference articleexamen par les pairs

1 Citation (Scopus)

Résumé

The nonlinear dynamics of a spider mechanoreceptor are examined using the Principal Dynamic Mode (PDM) methodology. The cuticilar sense organ of an adult Cupiennius Salei spider was stimulated with a pseudorandom Gaussian process spectrally bound at 400 Hz and the resulting action potentials were recorded. Data analysis reveals three PDMs that describe the system dynamics, based on the second order Volterra kernel, which is estimated from the recorded input/output datasets. The first PDM exhibits high-pass behavior, illustrating the importance of the speed of the slit displacement to the mechanoreceptor, while the other two PDMs exhibit bandpass behavior. The probability of firing an action potential is represented by a static multiple-input nonlinearity that receives the values of the convolution of each mode with the pseudorandom input as its inputs. The probability of firing function exhibits asymmetric behavior with respect to its arguments, suggesting directional dependence of the mechanoreceptor response on the PDM outputs. Trigger regions for a probability threshold value of 0.1 are also presented.

Langue d'origineEnglish
Pages (de-à)2051-2054
Nombre de pages4
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume3
Statut de publicationPublished - 2003
ÉvénementA New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico
Durée: sept. 17 2003sept. 21 2003

ASJC Scopus Subject Areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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