Document Detail

Mutual information in the evolution of trajectories in discrete aiming movements.
MedLine Citation:
PMID:  18510836     Owner:  NLM     Status:  MEDLINE    
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.
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.
25068746 - Ebbinghaus illusions with disc figures: effects of contextual size, separation, and lig...
23186866 - Influence of stimulus intensity on the soleus h-reflex amplitude and modulation during ...
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    
Department of Physical Education, Taipei Municipal University of Education, No. 1 Aiguo W. Rd., Taipei City, 100, Taiwan.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Computer Graphics*
Distance Perception
Information Theory*
Nonlinear Dynamics*
Psychomotor Performance*
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.