| Mutual information in the evolution of trajectories in discrete aiming movements. | |
| | |
MedLine Citation:
|
PMID: 18510836 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
This study investigated the mutual information in the trajectories of discrete aiming movements on a computer controlled graphics tablet where movement time ( 300 - 2050 ms) was manipulated in a given distance (100 mm) and movement distance (15-240 mm) in 2 given movement times (300 ms and 800 ms ). For the distance-fixed conditions, there was higher mutual information in the slower movements in the 0 vs. 80-100% trajectory point comparisons, whereas the mutual information was higher for the faster movements when comparing within the 80 and 100% points of the movement trajectory. For the time-fixed conditions, the spatial constraints led to a decreasing pattern of the mutual information throughout the points of the trajectory, with the highest mutual information found in the 80 vs. 100% comparison. Overall, the pattern of mutual information reveals systematic modulation of the trajectories between the attractive fixed point of the target as a function of movement condition. These mutual information patterns are postulated to be the consequence of the different relative contributions of feedforward and feedback control processes in trajectory formation as a function of task constraints. |
| | |
Authors:
|
Shih-Chiung Lai; Gottfried Mayer-Kress; Karl M Newell |
Related Documents
:
|
19949776 - Advance knowledge effects on kinematics of one-handed catching. 7123866 - Effects of reference lines on displacement thresholds at various durations of movement. 21833096 - Quasi-light-storage enhancement by reducing the brillouin gain bandwidth. 14579006 - A step and a hop on the müller-lyer: illusion effects on lower-limb movements. 23186866 - Influence of stimulus intensity on the soleus h-reflex amplitude and modulation during ... 21208606 - Stopping criteria for averaging the multiple auditory steady-state response. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Nonlinear dynamics, psychology, and life sciences Volume: 12 ISSN: 1090-0578 ISO Abbreviation: Nonlinear Dynamics Psychol Life Sci Publication Date: 2008 Jul |
Date Detail:
|
Created Date: 2008-05-30 Completed Date: 2008-08-29 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9704130 Medline TA: Nonlinear Dynamics Psychol Life Sci Country: United States |
Other Details:
|
Languages: eng Pagination: 241-59 Citation Subset: IM |
Affiliation:
|
Department of Physical Education, Taipei Municipal University of Education, No. 1 Aiguo W. Rd., Taipei City, 100, Taiwan. lsc2kpsu@yahoo.com.tw |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Computer Graphics* Distance Perception Entropy Feedback Humans Information Theory* Male Nonlinear Dynamics* Orientation* Psychomotor Performance* Psychophysics Reaction Time |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Rat instigated human population collapse on easter island.
Next Document: A catastrophe model for the prospect-utility theory question.