Visual evoked spread spectrum analysis (VESPA) responses to stimuli biased towards magnocellular and parvocellular pathways

Edmund C. Lalor, John J. Foxe

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Stimulus contrast fluctuations were controlled while the properties of a novel ERP known as the VESPA (Visual Evoked Spread Spectrum Analysis) were examined using data from 8 healthy human subjects. Substantial differences were seen between the morphologies of VESPAs obtained using low contrast stimuli when compared with those obtained using high contrast and full contrast range stimuli. Topographic distributions for both responses are compared and the findings are considered in terms of the response characteristics of the magnocellular and parvocellular visual pathways and the VESPA method itself.

Original languageEnglish (US)
Pages (from-to)127-133
Number of pages7
JournalVision Research
Volume49
Issue number1
DOIs
StatePublished - Jan 2009
Externally publishedYes

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Spectrum Analysis
Visual Pathways
Healthy Volunteers

Keywords

  • EEG
  • Impulse response
  • Stimulus contrast
  • VEP

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Cite this

Visual evoked spread spectrum analysis (VESPA) responses to stimuli biased towards magnocellular and parvocellular pathways. / Lalor, Edmund C.; Foxe, John J.

In: Vision Research, Vol. 49, No. 1, 01.2009, p. 127-133.

Research output: Contribution to journalArticle

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