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| Content Provider | Springer Nature Link |
|---|---|
| Author | Ursi, Mauro Cuppini, Cristia Magosso, Elisa Seri, Andrea Pellegri, Giuseppe |
| Copyright Year | 2008 |
| Abstract | Neurons in the superior colliculus (SC) are known to integrate stimuli of different modalities (e.g., visual and auditory) following specific properties. In this work, we present a mathematical model of the integrative response of SC neurons, in order to suggest a possible physiological mechanism underlying multisensory integration in SC. The model includes three distinct neural areas: two unimodal areas (auditory and visual) are devoted to a topological representation of external stimuli, and communicate via synaptic connections with a third downstream area (in the SC) responsible for multisensory integration. The present simulations show that the model, with a single set of parameters, can mimic various responses to different combinations of external stimuli including the inverse effectiveness, both in terms of multisensory enhancement and contrast, the existence of within- and cross-modality suppression between spatially disparate stimuli, a reduction of network settling time in response to cross-modal stimuli compared with individual stimuli. The model suggests that non-linearities in neural responses and synaptic (excitatory and inhibitory) connections can explain several aspects of multisensory integration. |
| Starting Page | 55 |
| Ending Page | 73 |
| Page Count | 19 |
| File Format | |
| ISSN | 09295313 |
| Journal | Journal of Computational Neuroscience |
| Volume Number | 26 |
| Issue Number | 1 |
| e-ISSN | 15736873 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2008-05-14 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Mathematical model Multisensory enhancement Cross-modal inhibition Theory of Computation Human Genetics Neurology Neurosciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cognitive Neuroscience Sensory Systems Cellular and Molecular Neuroscience |
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