Repository: OpenScienceRepository
Depends: R (>= 2.14)
Date: 2013-01-01 00:00:00
Title: Microsaccade-induced prolongation of saccadic latencies depends on microsaccade amplitude
Description: Fixations consist of small movements including microsaccades, i.e., rapid flicks in eye position that replace the retinal image by up to 1 degree of visual angle. Recently, we showed in a delayed-saccade task (1) that the rate of microsaccades decreased in the course of saccade preparation and (2) that microsaccades occurring around the time of a go signal were associated with prolonged saccade latencies (Rolfs et al., 2006). A re-analysis of the same data set revealed a strong dependence of these findings on microsaccade amplitude. First, microsaccade amplitude dropped to a minimum just before the generation of a saccade. Second, the delay of response saccades was a function of microsaccade amplitude: Microsaccades with larger amplitudes were followed by longer response latencies. These finding were predicted by a recently proposed model that attributes microsaccade generation to fixation-related activity in a saccadic motor map that is in competition with the generation of large saccades (Rolfs et al., 2008). We propose, therefore, that microsaccade statistics provide a behavioral correlate of fixation-related activity in the oculomotor system.    Journal of Eye Movement Research  
Author: Martin Rolfs and Jochen Laubrock and Reinhold Kliegl
Maintainer: Martin Rolfs <Martin.Rolfs@gmail.com>
Authors@R: c(person(given ="Martin", family = "Rolfs", email = "Martin.Rolfs@gmail.com", role = c("aut", "cre")), person(given ="Jochen", family = "Laubrock", role = c("aut")), person(given ="Reinhold", family = "Kliegl", role = c("aut")))
Package: RolfsLaubrockKliegl2013
Version: 1.0
License: CC BY-NC (http://creativecommons.org/licenses/by-nc/3.0/de/)
