 |
| Research article summary (published 30 Jan 2003): |
Saccadic adaptation in the horizontal and vertical directions in normal subjects.
Full Abstract
We studied the properties of adaptive gain control in the saccadic system and examined whether the adaptations in the horizontal direction transferred to those in the vertical direction, and vice versa, in 16 normal subjects. Eye movements were measured using search coil system. In the adaptive session, a target moved randomly in amplitude steps of 20 degrees or 30 degrees, with half of the subjects performing in the horizontal direction and the others in the vertical direction. The target eccentricity was changed by a constant percentage (70%) during each saccade aimed at the target. Gains were gradually decreased during the course of 120 repetitions, and then approached approximately 70%. Comparison was made of the accuracy (saccadic amplitude/first target step amplitude) of horizontal and vertical vectors of oblique saccades before and after the adaptation. After the horizontal adaptation, the accuracy of horizontal vectors decreased in the horizontal direction (P<0.05) but not in the vertical direction. After the vertical adaptation, however, the accuracy of horizontal and vertical vectors did not decrease. Our data show that adaptive gain control in the horizontal direction might not transfer to that in the vertical direction, nor vice versa.
Learn Faster Today Improve your study skills
Author information
Author/s: Watanabe, Shoji (S); Ogino, Sadao (S); Nakamura, Tadashi (T); Koizuka, Izumi (I);
Affiliation: Department of Otolaryngology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, 216-8511, Kawasaki, Japan. s2wata(-atsign-)marianna-u.ac.jp
Journal and publication information
Publication Type: Journal Article
Journal: Auris, nasus, larynx (Auris Nasus Larynx), published in Netherlands. (Language: eng)
Reference: 2003-Feb; vol 30 Suppl (issue ) : pp S41-5
Dates: Created 2003/01/24; Completed 2003/07/28; Revised 2004/11/17;
PMID: 12543159, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
External Links for this article (including full text providers, if available):
Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.
This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.
MeSH headings (categories)
This article was linked to the MESH Headings shown below.
|
Related articles
This article has not been indexed for related articles as yet, however you can still use the live related article search links below.
See a large map of 100+ related articles.