Principal component analysis of event-related potentials: misallocation of variance revisited.

@article{Achim1997PrincipalCA,
  title={Principal component analysis of event-related potentials: misallocation of variance revisited.},
  author={Andr{\'e} Achim and Walter S. Marcantoni},
  journal={Psychophysiology},
  year={1997},
  volume={34 5},
  pages={597-606}
}
Misallocating variance, in event-related potential analysis, refers to attributing an experimental effect to components not actually affected. A vector interpretation of the relationship between mathematically derived and true underlying components shows that misallocation depends exclusively on incorrect identification of the affected component. Simulations, using seven imperfect rotations, confirmed all predictions from the vector interpretation concerning the presence, direction, and size of… CONTINUE READING

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