Plate 1. A topographical mapping of the Nc component that occurs during sustained a5en6on and ina5en6on for the frequent familiar, infrequent familiar, and infrequent novel s6muli. The data in each figure represent an 80ms average of the ERP for the Nc component at the maximum point of the ERP response. The data are plo5ed with a cubic spline interpola6on algorithm, with an averaged electrode reference, and represent absolute amplitude of the ERP (from Richards, 2000c).
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Plate 1. A topographical mapping of the Nc component that occurs during sustained a5en6on and ina5en6on for the frequent familiar, infrequent familiar, and infrequent novel s6muli. The data in each figure represent an 80ms average of the ERP for the Nc component at the maximum point of the ERP response. The data are plo5ed with a cubic spline interpola6on algorithm, with an averaged electrode reference, and represent absolute amplitude of the ERP (from Richards, 2000c).
Plate 3. Equivalent current dipole analysis of the presaccadic ERP poten6al occurring at 50ms before a target in an expected loca6on. The equivalent current dipole (bo5om) generated a scalp topographical poten6al map (top right) that matched the recorded ERP (top leJ).