| Abstract: | Oscillatory neural-network preattention and attention models are examined. A two-layer network of Wilson-Cowan oscillators is used to show that two-frequency oscillations can appear in response to a compound stimulus. It is shown that these oscillations can be synchronized at the low frequency, which can be interpreted as feature binding. Partial synchronization is studied in a model of a network of phased oscillators with a central element. Formulas are given for approximation of the average frequency of the central oscillator for small and large networks. The results describe the effect of a distracting stimulus on attention focus.Institute of Mathematical Problems of Biology, Russian Academy of Sciences. Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 37, No. 8, pp. 933–944, August, 1994. |
