Skip to main content

Thank you for visiting You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

  • Article
  • Published:

Evoked Responses to Numerical and Non-Numerical Visual Stimuli while Problem Solving

This is a preview of subscription content, access via your institution

Access options

Buy this article

Prices may be subject to local taxes which are calculated during checkout


  1. Hernandez-Peon, R., Scherrer, H., and Jouvet, M., Science, 123, 331 (1956). Horn, G., Brain, 83, 57 (1960). Jane, J., Smirnov, G., and Jasper, H., Electroencephalog. Clin. Neurophysiol., 14, 344 (1962).

    Article  ADS  CAS  Google Scholar 

  2. Jouvet, M., and Courjon, J., Rev. Neurol., 99, 177 (1958). Larsson, L., Acta physiol. scand., 48, 276 (1960). Garcia-Austt, E., Bogacz, J., and Vanzulli, A., in Brain Mechanisms and Learning, 603 (Blackwell Scientific Publications, Oxford, 1961). van Hof, M., van Hof-Van Duin, J., van der Mark, F., and Rietveld, W., Acta Physiol. Pharmacol. Neerlandica, 11, 485 (1962).

    Google Scholar 

  3. Galambos, R., Sheatz, G., and Vernier, V., Science, 123, 376 (1956). Moushegian, G., Rupert, A., Marsh, J., and Galambos, R., Science, 133, 582 (1961). Garcia-Austt, E., Vanzulli, A., Bogacz, J., and Rodriguez-Barrios, R., Electroencephalog. Clin. Neurophysiol., 15, 281 (1963). Marsh, J., McCarthy, D., Sheatz, G., and Galambos, R., Electroencephalog. Clin. Neurophysiol., 13, 224 (1961). Hearst, E., Beer, B., Sheatz, G., and Galambos, B., Electroencephalog. Clin. Neurophysiol., 12, 137 (1960). Galambos, R., and Sheatz, G., Amer. J. Physiol., 203, 173 (1962).

    Article  ADS  CAS  Google Scholar 

  4. Marsh, J., Worden, F., and Hicks, L., Science, 137, 280 (1962). Hess, E., and Polt, J., Science, 132, 349 (1960). Fernandez-Guardiola, A., Roldan E., Fanjul, M., and Castells, C., Electroencephalog. Clin. Neurophysiol., 13, 564 (1961).

    Article  ADS  CAS  Google Scholar 

  5. 2.5 cm below C z, and O z in the International 10–20 system. Jasper, H., Electroencephalog. Clin. Neurophysiol., 10, 370 (1958).

    Article  Google Scholar 

  6. Kropfl, W., Chapman, R., and Armington, J., Electroencephalog. Clin. Neurophysiol., 14, 921 (1962).

    Article  Google Scholar 

  7. Riggs, L., Proc. Soc. Exp. Biol., 48, 204 (1941).

    Article  Google Scholar 

Download references

Author information

Authors and Affiliations


Rights and permissions

Reprints and permissions

About this article

Cite this article

CHAPMAN, R., BRAGDON, H. Evoked Responses to Numerical and Non-Numerical Visual Stimuli while Problem Solving. Nature 203, 1155–1157 (1964).

Download citation

  • Issue Date:

  • DOI:

This article is cited by


By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.


Quick links

Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing