Neuroscience/Sensory Systems

Seeing ‘Where’ through the Ears: Effects of Learning-by-Doing and Long-Term Sensory Deprivation on Localization Based on Image-to-Sound Substitution

Published on 2008-03-26 in PLoS ONE, vol 3. DOI: 10.1371/journal.pone.0001840
BackgroundSensory substitution devices for the blind translate inaccessible visual information into a format that intact sensory pathways can process. We here tested image-to-sound conversion-based localization of visual stimuli (LEDs and objects) in 13 blindfolded participants.Methods and FindingsSubjects were assigned to different roles as a function of two variables: visual deprivation (blindfolded continuously (Bc) for 24 hours per day for 21 days; blindfolded for the tests only… Read more

Learning Priors for Bayesian Computations in the Nervous System

Published on 2010-09-10 in PLoS ONE, vol 5. DOI: 10.1371/journal.pone.0012686
Our nervous system continuously combines new information from our senses with information it has acquired throughout life. Numerous studies have found that human subjects manage this by integrating their observations with their previous experience (priors) in a way that is close to the statistical optimum. However, little is known about the way the nervous system acquires or learns priors. Here we present results from experiments where the underlying distribution of target locations in… Read more