Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Stochastic sensitivity of a bistable energy model for visual perception
Year:2017
Research Areas
  • Differential equations on complex domains,
  • Complex dynamical systems,
  • Dynamic systems of low density,
  • Probabilistic methods,
  • Simulations outside data analysis,
  • Cognitive science
Information
Abstract
Modern trends in physiology, psychology and cognitive neuroscience suggest that noise is an essential component of brain functionality and self-organization. With adequate noise the brain as a complex dynamical system can easily access different ordered states and improve signal detection for decision-making by preventing deadlocks. Using a stochastic sensitivity function approach, we analyze how sensitive equilibrium points are to Gaussian noise in a bistable energy model often used for qualitative description of visual perception. The probability distribution of noise-induced transitions between two coexisting percepts is calculated at different noise intensity and system stability. Stochastic squeezing of the hysteresis range and its transition from positive (bistable regime) to negative (intermittency regime) are demonstrated as the noise intensity increases. The hysteresis is more sensitive to noise in the system with higher stability.
International
Si
JCR
Si
Title
Indian Journal of Physics
ISBN
0973-1458
Impact factor JCR
1,166
Impact info
Volume
91
10.1007/s12648-016-0881-2
Journal number
1
From page
57
To page
62
Month
SIN MES
Ranking
Participants
  • Autor: Alexander Pisarchik (UPM)
  • Autor: Irina Bashkirtseva (Ural Federal University)
  • Autor: Lev Ryashko (Ural Federal University)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Tecnologías para Ciencias de la Salud
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)