Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/67526
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Delays in using chromatic and luminance information to correct rapid reaches |
Author: | Kane, A. Wade, A. Ma-Wyatt, A. |
Citation: | Journal of Vision, 2011; 11(10):3-1-3-18 |
Publisher: | Association for Research in Vision and Ophthalmology |
Issue Date: | 2011 |
ISSN: | 1534-7362 1534-7362 |
Statement of Responsibility: | Adam Kane, Alex Wade and Anna Ma-Wyatt |
Abstract: | People can use feedback to make online corrections to movements but only if there is sufficient time to integrate the new information and make the correction. A key variable in this process is therefore the speed at which the new information about the target location is coded. Conduction velocities for chromatic signals are lower than for achromatic signals so it may take longer to correct reaches to chromatic stimuli. In addition to this delay, the sensorimotor system may prefer achromatic information over the chromatic information as delayed information may be less valuable when movements are made under time pressure. A down-weighting of chromatic information may result in additional latencies for chromatically directed reaches. In our study, participants made online corrections to reaches to achromatic, (L–M)-cone, and S-cone stimuli. Our chromatic stimuli were carefully adjusted to minimize stimulation of achromatic pathways, and we equated stimuli both in terms of detection thresholds and also by their estimated neural responses. Similar stimuli were used throughout the subjective adjustments and final reaching experiment. Using this paradigm, we found that responses to achromatic stimuli were only slightly faster than responses to (L–M)-cone and S-cone stimuli. We conclude that the sensorimotor system treats chromatic and achromatic information similarly and that the delayed chromatic responses primarily reflect early conduction delays. |
Keywords: | Pointing sensorimotor control color vision active vision detection/discrimination |
Rights: | Copyright ARVO |
DOI: | 10.1167/11.10.3 |
Published version: | http://dx.doi.org/10.1167/11.10.3 |
Appears in Collections: | Aurora harvest 5 Psychology publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.