Abstract
In this study we investigate the spatio-temporal organization of the human cortical activity in complex tasks. Such complex interactions are crucial, for instance, in the case of voluntary actions, memory and are probably impaired in neurological disorders (e.g. epilepsy) or psychiatric disorders (e.g. schizophrenia).
The aim of the performed fMRI experiments was to evaluate multiple cortical areas involved in verbal output and input during two different covert language tasks, namely “verbal fluency” and “verbal understanding”. We discuss the relevance of such data for a theory of cortex dynamics which emphasizes the role of long-range lateral connections. The future experimental investigation will be aimed at the analysis of the spatio-temporal structure of cortical activity in pathological conditions, such as epilepsy.
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References
S. Amari. Dynamics of pattern formation in lateral-inhibition type neural fields. Biological Cybernetics, 27:77–87, 1977.
W. Calvin. Cortical columns, modules and hebbian cell assemblies. In M. Arbib, editor, The handbook of brain theory and neural networks, pages 269–272. MIT Press, Cambridge, MA, 1995.
F. Frisone and P.G. Morasso. Representing multidimensional stimuli on the cortex. In C. von der Malsburg, W. von Seelen, and J. C. Vorbrüggen, editors, Artificial Neural Networks — ICANN96, pages 649–654, Bochum, Germany, July 1996. Springer-Verlag.
K.J. Friston, C.D. Frith, P.F. Liddle, and R.S.J. Frackowiak. Functional connectivity: the principal component analysis of large (pet) data sets. Journal of cerebral blood flow and metabolism, 13:5–14, 1993.
C.D. Frith, K.J. Friston, P.F. Liddle, and R.S.J. Frackowiak. Willed action and the prefrontal cortex in man: a study with pet. Proceedings Royal Society of London, 244:241–246, 1991.
M. Habib, J.F. Demonet, and R.S.J. Frackowiak. Neuroanatomie cognitive du language: contribution de l’imagerie fonctionelle cerebrale. Revue Neurologique, 152:249–260, 1996.
E. I. Knudsen, S. du Lac, and S.D. Esterly. Computational maps in the brain. Annual Review of Neuroscience, 10:41–65, 1987.
T. Kohonen. Self organizing formation of topologically correct feature maps. Biological Cybernetics, 43:59–69, 1982.
P.G. Morasso and V. Sanguineti. How the brain can discover the existence of external egocentric space. Neurocomputing, 12:289–310, 1996.
A. Nicoll and C. Blakemore. Patterns of local connectivity in the neocortex. Neural Computation, 5:665–680, 1993.
J.A. Reggia, C.L. D’Autrechy, G.G. Sutton III, and M. Weinrich. A competitive distribution theory of neocortical dynamics. Neural Computation, 4:287–317, 1992.
W. Singer. Development and plasticity of cortical processing architectures. Science, 270:758–764, 1995.
J. Sirosh, R. Mikkulainen, and Y. Choe. Lateral interactions in the cortex. Hypertext Book, 1989. URL:www.cs.utexas.edu/users/nn/web-pubs/htmlbook96.
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Frisone, F., Morasso, P.G., Iannò, G., Marongiu, M., Vitali, P., Rodriguez, G. (1999). Spatio-temporal cortical activity patterns in cognitive tasks using fMRI. In: Marinaro, M., Tagliaferri, R. (eds) Neural Nets WIRN VIETRI-98. Perspectives in Neural Computing. Springer, London. https://doi.org/10.1007/978-1-4471-0811-5_10
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DOI: https://doi.org/10.1007/978-1-4471-0811-5_10
Publisher Name: Springer, London
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