The Role and Modelling of Presynaptic Inhibition in the Visual Pathway: Applications in Image Processing

  • Roberto Moreno-DíazJr.
  • Alexis Quesada-Arencibia
Conference paper


Presynaptic Inhibition (PI) basically consists of the strong suppression of a neuron’s response before the stimulus reaches the synaptic terminals mediated by a second, inhibitory, neuron. It has a long lasting effect, greatly potentiated by the action of anaesthetics, that has been observed in motorneurons and in several other places of nervous systems, mainly in sensory processing. In this paper we will focus on several different ways of modelling the effect of PI in the visual pathway as well as the different artificial counterparts derived from such modelling, mainly in two directions: the possibility of computing invariant representations against general changes in illumination of the input image impinging the retina (which is equivalent to a low-level non linear information processing filter) and the role of PI as selector of sets of stimulae that have to be derived to higher brain areas, which, in turn, is equivalent to a “higher-level filter” of information, in the sense of “filtering” the possible semantic content of the information that is allowed to reach later stages of processing.


Ganglion Cell Input Image Visual Pathway Presynaptic Inhibition Movement Discrimination 


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Copyright information

© Springer-Verlag Wien 1999

Authors and Affiliations

  • Roberto Moreno-DíazJr.
    • 1
  • Alexis Quesada-Arencibia
    • 1
  1. 1.Edificio de Informática y MatemáticasInstituto Universitario de Ciencias y Tecnologías Cibernéticas, ULPGCLas PalmasSpain

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