Effects of pattern convergence and orthogonality on visual evoked potentials

R. Iezzi, E. Micheli-Tzanakou, N. Cottaris

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Patterned stimuli were generated by an optimization method called ALOPEX. This sequence of 15 patterns starts with a random pattern and converges to a vertical bar. Visual evoked potentials are then recorded using this sequence of patterns for different biasing patterns during the OFF period. In one case a blank pattern is used (unbiased case), and in a second an orthogonal pattern to the vertical bar (biased case) is used. The N2 peak exhibits a strongly increasing latency in the unbiased case, while in the orthogonally biased case there exists a correspondingly strong negative correlation. When the ON patterns start from the vertical bar ending with the random pattern the N2 latency trends are exactly opposite to those observed during the OFF period.

Original languageEnglish (US)
Title of host publicationProceedings of the Annual Conference on Engineering in Medicine and Biology
Place of PublicationPiscataway, NJ, United States
PublisherPubl by IEEE
Pages897-898
Number of pages2
Editionpt 2
ISBN (Print)0879425598
StatePublished - 1990
Externally publishedYes
EventProceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Philadelphia, PA, USA
Duration: Nov 1 1990Nov 4 1990

Other

OtherProceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CityPhiladelphia, PA, USA
Period11/1/9011/4/90

ASJC Scopus subject areas

  • Bioengineering

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