A two-dimensional computer-controlled visual stimulator

Norman Milkman, Gary Schick, Michelangelo Rossetto, Floyd Ratliff, Robert Shapley, Jonathan Victor

Research output: Contribution to journalArticlepeer-review


A computer-controlled instrument that creates complex two-dimensional patterns on a CRT monitor is described. These patterns are used to elicit visual evoked responses. Patterns are produced on a raster that is rotatable about its center. It is possible to assign to arbitrary regions in the raster any of four independent one-dimensional spatial-temporal functions. For each spatial-temporal function, the experimenter can select an arbitrary spatial profile, the spatial frequency of the profile, the starting phase of the profile, the temporal function, and the depth of modulation.

Original languageEnglish (US)
Pages (from-to)283-292
Number of pages10
JournalBehavior Research Methods & Instrumentation
Issue number3
StatePublished - May 1980

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Psychology (miscellaneous)
  • General Psychology


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