fMRI studies of visual cortical activity during noise stimulation

E. Simonotto, F. Spano, M. Riani, A. Ferrari, F. Levrero, A. Pilot, P. Renzetti, R. C. Parodi, F. Sardanelli, P. Vitali, J. Twitty, F. Chiou-Tan, F. Moss

Research output: Contribution to journalArticlepeer-review

Abstract

Psychophysics experiments on the human visual system have established that the sensitivity for the detection of fine detail in noise contaminated images can be quantitatively and repeatably measured using stochastic resonance as a tool. Optimal noise results in maximal sensitivity. Does this mean simply that the retina is averaging out the noise, or instead is the visual cortex involved in some level of computation? We report results of functional magnetic resonance imaging experiments which indicate the latter.

Original languageEnglish
Pages (from-to)511-516
Number of pages6
JournalNeurocomputing
Volume26-27
DOIs
Publication statusPublished - Jun 1999

Keywords

  • Functional magnetic resonance imaging (fMRI)
  • Noise
  • Stochastic resonance
  • Visual cortex

ASJC Scopus subject areas

  • Artificial Intelligence
  • Cellular and Molecular Neuroscience

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