Visual evoked potential augmenting-reducing.

@article{Connolly1989VisualEP,
  title={Visual evoked potential augmenting-reducing.},
  author={J F Connolly and John H. Gruzelier},
  journal={International journal of psychophysiology : official journal of the International Organization of Psychophysiology},
  year={1989},
  volume={7 2-4},
  pages={461-2}
}