T-18. Vector summation in young infants

Mark H. Johnson, Rick O. Gilmore, Leslie A. Tucker, Sarah L. Minister

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Immaturities in cortical visual processing make the retinocollicular pathway dominant in young infants' saccadic control. The superior colliculus appears to transform retinal position into saccadic commands by the summation or averaging of movement vectors associated with deep layer neurons. We explored the extent to which infants 2, 4, and 6 months of age would make saccades equivalent to the sum of individual retinal vectors of two simultaneous visual targets. Consistent with predic-tions that increasing cortical influence over saccade generation would diminish the prevalence of vector sum saccades, we observed that the mean proportions of these responses declined as the age of subjects tested increased.

Original languageEnglish (US)
Pages (from-to)237-243
Number of pages7
JournalBrain and cognition
Issue number2
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology
  • Arts and Humanities (miscellaneous)
  • Cognitive Neuroscience


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