Neural processing in vergence eye movements: A time based study

Tara Alvarez, John L. Semmlow

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

Abstract

Inward turning of the two eyes, termed disparity vergence, sometimes exhibits two closely-spaced, fast dynamic movements. These response doubles can provide information on the neural processes that control the fast, dynamic response. The second component of this pair could be generated by either an internal process or by external error from visual feedback. To differentiate between these two mechanisms, a comparison was made between doubles induced experimentally (using a `forced-error' protocol) and those that occur naturally in standard step responses. The two stimulus conditions produced response doubles with different timing properties. Since the forced-error doubles were generated by visual feedback, differences in timing imply that normally occurring double responses are mediated by an internal mechanism. This internal feedback mechanism is likely to be involved in the production and control of the fast dynamic portion of all vergence eye movements.

Original languageEnglish (US)
Title of host publicationBioengineering, Proceedings of the Northeast Conference
Editors Anon
PublisherIEEE
Pages79-80
Number of pages2
StatePublished - Jan 1 1997
Externally publishedYes
EventProceedings of the 1997 23rd Annual Northeast Bioengineering Conference - Durham, NH, USA
Duration: May 21 1997May 23 1997

Other

OtherProceedings of the 1997 23rd Annual Northeast Bioengineering Conference
CityDurham, NH, USA
Period5/21/975/23/97

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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