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We investigated adding brain spatial information to temporal event\u2010related potentials (ERPs) to increase AD identification accuracy over temporal ERPs alone.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>With two\u2010step principal components analysis, we applied multivariate analyses that incorporated temporal and spatial ERP information from a cognitive task. Discriminant analysis used temporospatial ERP scores to classify participants as belonging to either the AD or healthy control group.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Temporospatial ERPs produced a cross\u2010validated area under the curve of 0.84. Adding spatial information through a formal procedure significantly improves classification accuracy.<\/jats:p><\/jats:sec><jats:sec><jats:title>Discussion<\/jats:title><jats:p>A weighted combination of temporospatial ERP markers performs well in detecting AD. 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