M and P components of the VEP and their visual field distribution

H. A. Baseler, E. E. Sutter

Research output: Contribution to journalArticlepeer-review


To study components related to parallel processing of information across the visual field, multi-focal pattern reversal visual evoked potentials (VEPs) were recorded using binary m-sequences. Contrast, chromatic, spatial and temporal characteristics of the stimuli were varied in order to favor contributions from either M or P pathways. Responses were decomposed into two additive components whose behavior was consistent with that of M and P mechanisms. The results suggest that contributions to the VEP from the M pathway precede those from the P pathway, and that the ratio of P/M contributions decreases with eccentricity.
Original languageEnglish
Pages (from-to)675-690
Number of pages16
JournalVision Research
Issue number6
Publication statusPublished - Mar 1997


  • Adult
  • Contrast Sensitivity
  • Evoked Potentials, Visual
  • Female
  • Fixation, Ocular
  • Humans
  • Male
  • Pattern Recognition, Visual
  • Time Factors
  • Visual Cortex
  • Visual Fields
  • Visual Pathways

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