Letter | Published:

Sensitivity of Populations of Visual Cortical Cells to Variable Period Stimulation

Naturevolume 212pages323324 (1966) | Download Citation



THE hypothesis has been advanced that pictorial information is processed by the mammalian visual system as distinct frames of data1–3. Bearing in mind the mechanics of physical image processing systems, it is apparent that the number of frames which can be processed each second is not without limit. The purpose of this investigation was to answer several questions: (1) How many frames can the mammalian visual system process in one second ? (2) If finite, is the rate fixed or variable ? (3) If fixed, what is the rate ? (4) If variable, what is the “processing time” for one frame ?

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.


  1. 1

    Bishop, G. H., and O'Leary, J. L., J. Neurophysiol., 3, 308 (1940).

  2. 2

    Walsh, B. G., J. Physiol., 118, 500 (1952).

  3. 3

    Walter, W. G., J. Ment. Sci., 96, 1 (1950).

  4. 4

    Taravella, C. L., and Clark, G., Exp. Neurol., 7, 282 (1963).

  5. 5

    Hecht, S., Bull. N.Y. Acad. Med., 14, 21 (1938).

  6. 6

    Sperling, G., Psychol. Mono., 74, 1 (1960).

  7. 7

    Chaikin, J. D., Corbin, H. H., and Volkman, J., Science, 138, 1327 (1962).

  8. 8

    Raab, D. H., Psychol. Bull., 60, 118 (1963).

  9. 9

    Mitra, N. L., J. Anat., 89, 467 (1955).

Download references

Author information


  1. U.S. Public Health Service Hospital, Brighton, Massachusetts



  1. Search for PHILIP I. HERSHBERG in:

About this article

Publication history

Issue Date




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.