fMRI studies of visual cortical activity during noise stimulation
| Autor: | P. Renzetti, Paolo Vitali, Frank Moss, R. C. Parodi, Jennifer Twitty, Massimo Riani, A. Pilot, Enrico Simonotto, Francesco Sardanelli, F. Levrero, F. Spano, A. Ferrari, F. Chiou-Tan |
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| Rok vydání: | 1999 |
| Předmět: |
Physics
genetic structures Quantitative Biology::Neurons and Cognition medicine.diagnostic_test Stochastic resonance business.industry Cognitive Neuroscience Functional magnetic resonance spectroscopy of the brain Computer Science Applications Noise Visual cortex medicine.anatomical_structure Artificial Intelligence Human visual system model medicine Psychophysics Computer vision Sensitivity (control systems) Artificial intelligence Functional magnetic resonance imaging business |
| Zdroj: | Neurocomputing. :511-516 |
| ISSN: | 0925-2312 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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