Artifactually induced VEP classification of form and color attributes: a refutation of "Neuroelectric concepts:...

An algebraic analysis of the procedures used in "Neuroelectric Concepts: Form-Color Classification," Brain and Cognition, 21, 226-246 (1993) by William J. Hudspeth reveals that the article's results are artifactual, having been produced by the introduction of strong linear dependencies during data transformation. The same pattern of principal results is shown to obtain by applying Hudspeth's procedures both to arbitrarily selected EP input data having no connection to form or color discrimination, and to waveforms composed of sequences of random numbers.