Distributed population coding of multisensory spatial information in the associative cortex

The European Journal of Neuroscience
György BenedekAttila Nagy

Abstract

This study describes a possible mechanism of coding of multisensory information in the anterior ectosylvian visual area of the feline cortex. Extracellular microelectrode recordings on 168 cells were carried out in the anterior ectosylvian sulcal region of halothane-anaesthetized, immobilized, artificially ventilated cats. Ninety-five neurons were found to respond to visual stimuli, 96 responded to auditory stimuli and 45 were bimodal, reacting to both visual and auditory modalities. A large proportion of the neurons exhibited significantly different responses to stimuli appearing in different regions of their huge receptive field. These neurons have the ability to provide information via their discharge rate on the site of the stimulus within their receptive field. This suggests that they may serve as panoramic localizers. The ability of the bimodal neurons to localize bimodal stimulus sources is better than any of the unimodal localizing functions. Further, the sites of maximal responsivity of the visual, auditory and bimodal neurons are distributed over the whole extent of the large receptive fields. Thus, a large population of such panoramic visual, auditory and multisensory neurons could accurately code the locations of th...Continue Reading

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Citations

Feb 22, 2008·Journal of Neurophysiology·Brian N CarriereMark T Wallace
Apr 11, 2009·Journal of the American Academy of Audiology·Daniel B PolleyMark T Wallace
Mar 8, 2011·Neuroscience·P GombkötoA Nagy
Jul 28, 2005·The European Journal of Neuroscience·Attila NagyGyörgy Benedek
Aug 17, 2005·The European Journal of Neuroscience·Paul R MangerAndreas K Engel
Aug 26, 2006·The European Journal of Neuroscience·Attila NagyGyörgy Benedek
May 16, 2009·Orvosi hetilap·Rozália Pusztai
Aug 26, 2011·Neuroscience Letters·Anett Júlia NagyAttila Nagy
Jun 23, 2009·Nature Reviews. Neuroscience·Miguel A L Nicolelis, Mikhail A Lebedev
Jul 5, 2019·Physiology International·G BenedekM Norita
Jul 14, 2009·Orvosi hetilap·Gabriella Eördegh

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