Gamma-Band Oscillations in a Cortical Model
Computer simulation was used in a study of the dynamical behaviour of an anatomically-realistic model of the primary visual cortex. The model incorporated the inter-layer connections in a given cortical area, and also the forward and reverse projections by which adjacent areas in the visual hierarchy interact. It was found that the dynamical behaviour of a two-area model displayed oscillations at a frequency of around 50Hz, which lies in the so-called gamma band. The observed oscillations may have the same origin as those recently seen experimentally under certain conditions in the visual systems of cats.
KeywordsGamma Band Beta Band Distal Dendrite Area Beta Neuronal Assembly
Unable to display preview. Download preview PDF.
- Gray, C. M., & Singer, W. Soc. Neurosci. Abstr. 404, 3 (1987).Google Scholar
- Singer, W. Concepts in Neurosci. 1, 1–26 (1990).Google Scholar
- von der Malsburg, C. in The Neural and Molecular Bases of Learning (eds Changeux, J. P. & Konishi, M.) 411–431, Wiley, Chichester, (1987).Google Scholar
- Maunsell, J. H. R. & van Essen, D. C. J. Neurosci. 3, 2563–2586 (1983).Google Scholar
- Mountcastle, V. B. in The Neurosciences Fourth Study Programme (eds Schmitt, F. O. & Worden, F. G.) 21–42, MIT Press, Cambridge, Mass, (1979).Google Scholar
- Kammen, D. M., Holmes, P.H. & Koch, C. In Cotterill, R.M.J. ed. Models of Brain Function, Cambridge Univ. Press, 273–284, (1989).Google Scholar
- Bullier, J., McCourt, M.E. & Henry, M.H. Exp. Brain Res. 70, 90–98, (1988).Google Scholar
- Saermark, K., Bak, C.B. & Lebech, (to be published)Google Scholar
- Crick F. & Koch, C. Seminars in the Neurosciences, 2:263–275 (1990).Google Scholar