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A neural model of multimodal adaptive saccadic eye movement control by superior colliculus.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Grossberg, Stephen Roberts, Karen Aguilar, Mario Bullock, Daniel |
| Copyright Year | 1997 |
| Abstract | How does the saccadic movement system select a target when visual, auditory, and planned movement commands differ? How do retinal, head-centered, and motor error coordinates interact during the selection process? Recent data on superior colliculus (SC) reveal a spreading wave of activation across buildup cells the peak activity of which covaries with the current gaze error. In contrast, the locus of peak activity remains constant at burst cells, whereas their activity level decays with residual gaze error. A neural model answers these questions and simulates burst and buildup responses in visual, overlap, memory, and gap tasks. The model also simulates data on multimodal enhancement and suppression of activity in the deeper SC layers and suggests a functional role for NMDA receptors in this region. In particular, the model suggests how auditory and planned saccadic target positions become aligned and compete with visually reactive target positions to select a movement command. For this to occur, a transformation between auditory and planned head-centered representations and a retinotopic target representation is learned. Burst cells in the model generate teaching signals to the spreading wave layer. Spreading waves are produced by corollary discharges that render planned and visually reactive targets dimensionally consistent and enable them to compete for attention to generate a movement command in motor error coordinates. The attentional selection process also helps to stabilize the map-learning process. The model functionally interprets cells in the superior colliculus, frontal eye field, parietal cortex, mesencephalic reticular formation, paramedian pontine reticular formation, and substantia nigra pars reticulata. |
| Starting Page | 607 |
| Ending Page | 611 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.cns.bu.edu/Profiles/Grossberg/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://www.cns.bu.edu/Profiles/Grossberg/GroRobAguBul97.ps.gz |
| Alternate Webpage(s) | http://cns.bu.edu/Profiles/Grossberg/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://techlab.bu.edu/files/resources/articles_cns/GroRobAguBul97.pdf |
| Alternate Webpage(s) | http://cns-web.bu.edu/~steve/GroRobAguBul97.pdf |
| Alternate Webpage(s) | http://cns-web.bu.edu/Profiles/Grossberg/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://cns-web.bu.edu/~steve/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://cns-web.bu.edu/Profiles/Grossberg.old/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://www.cns.bu.edu/Profiles/Grossberg.old/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://cns-web.bu.edu/Profiles/Grossberg.html/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://cns-web.bu.edu/Profiles/Grossberg/GroRobAguBul97.pdf |
| Alternate Webpage(s) | http://cns.bu.edu/~steve/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://cns.bu.edu/Profiles/Grossberg.old/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://cns.bu.edu/Profiles/Grossberg.html/GroRobAguBul97.pdf |
| Alternate Webpage(s) | http://cns.bu.edu/Profiles/Grossberg.html/GroRobAguBulJN1997.pdf |
| Alternate Webpage(s) | http://www.jneurosci.org/content/jneuro/17/24/9706.full.pdf |
| Alternate Webpage(s) | http://www.cns.bu.edu/Profiles/Grossberg.html/GroRobAguBulJN1997.pdf |
| PubMed reference number | 9391024v1 |
| Volume Number | 17 |
| Issue Number | 24 |
| Journal | The Journal of neuroscience : the official journal of the Society for Neuroscience |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Alignment Body Fluid Discharge Buildup CDISC ADAS-Cog - Commands Summary Score Corpora quadrigemina, superior colliculus Eye Movements Midbrain structure N-Methyl-D-Aspartate Receptors N-Methylaspartate Parietal Lobe Pontine structure Retina Saccades Structure of reticular formation of midbrain Substantia nigra structure anatomical layer pars reticulata of substantia nigra |
| Content Type | Text |
| Resource Type | Article |
