Visuomotor Coordination In Symmetric And Asymmetric Bimanual Reaching Tasks.

Overview

Eye-hand coordination is fundamental to performing any motor activity, from the simplest tasks to skilled operations required of professionals in sports or industry. While coordination of concurrent motor responses has been studied extensively, the factors that drive specific patterns of coupling of the two hand movements are not yet clearly understood. The dissertation discusses the organization of bimanual coordination: patterns of movement initiations, movement durations, and spatio-temporal coupling of hand ...
See more details below
Other sellers (Paperback)
  • All (2) from $71.99   
  • New (2) from $71.99   
Sending request ...

More About This Book

Overview

Eye-hand coordination is fundamental to performing any motor activity, from the simplest tasks to skilled operations required of professionals in sports or industry. While coordination of concurrent motor responses has been studied extensively, the factors that drive specific patterns of coupling of the two hand movements are not yet clearly understood. The dissertation discusses the organization of bimanual coordination: patterns of movement initiations, movement durations, and spatio-temporal coupling of hand movements as a function of task demand. A model has been proposed to predict how competing visual demands of both hand systems could be met within constraints of the visual system. This study investigates the role of visual feedback in mediating control of bimanual movements using two reach tasks, one with each hand, to targets with different accuracy constraints. A strong tendency to temporally synchronize movements of both hands was observed. Although synchronized until peak-velocity, patterns of coordination of terminal phases of movements varied as a function of task difficulty. Spatial symmetry was compromised in favor of temporal symmetry. Patterns of spatial coupling were pre-planned based on the system's expectations about the time of availability of visual feedback for completion of the secondary task. With practice, different eye-hand coordination strategies emerged as a function of task precision. Although both movements were performed simultaneously, feedback resources were prioritized to process movement corrections of only one task at a time. In symmetric task conditions, visual attention was consistently allocated first to the left-hand-task (primary), and performance of the right-hand-task was secondary, dependent on successful performance of the primary task. This behavior indicates asymmetry in feedback requirements of the two hand systems. An integrated control model of the two hands and gaze system was developed to simulate self-paced bimanual tasks with only high-level inputs. This model sequences movement phases as a function of task parameters and mediates optimal allocation of visual resources to both hands. Combined with an attention-allocation mechanism based on a stochastic probability of successful task completion, the model accurately produces the diverse visuomotor coordination phenomena observed in laboratory (task prioritization, gaze transitions and production of realistic multimode hand velocity profiles).
Read More Show Less

Product Details

  • ISBN-13: 9781243750846
  • Publisher: BiblioLabsII
  • Publication date: 9/9/2011
  • Pages: 186
  • Product dimensions: 7.44 (w) x 9.69 (h) x 0.40 (d)

Customer Reviews

Be the first to write a review
( 0 )
Rating Distribution

5 Star

(0)

4 Star

(0)

3 Star

(0)

2 Star

(0)

1 Star

(0)

Your Rating:

Your Name: Create a Pen Name or

Barnes & Noble.com Review Rules

Our reader reviews allow you to share your comments on titles you liked, or didn't, with others. By submitting an online review, you are representing to Barnes & Noble.com that all information contained in your review is original and accurate in all respects, and that the submission of such content by you and the posting of such content by Barnes & Noble.com does not and will not violate the rights of any third party. Please follow the rules below to help ensure that your review can be posted.

Reviews by Our Customers Under the Age of 13

We highly value and respect everyone's opinion concerning the titles we offer. However, we cannot allow persons under the age of 13 to have accounts at BN.com or to post customer reviews. Please see our Terms of Use for more details.

What to exclude from your review:

Please do not write about reviews, commentary, or information posted on the product page. If you see any errors in the information on the product page, please send us an email.

Reviews should not contain any of the following:

  • - HTML tags, profanity, obscenities, vulgarities, or comments that defame anyone
  • - Time-sensitive information such as tour dates, signings, lectures, etc.
  • - Single-word reviews. Other people will read your review to discover why you liked or didn't like the title. Be descriptive.
  • - Comments focusing on the author or that may ruin the ending for others
  • - Phone numbers, addresses, URLs
  • - Pricing and availability information or alternative ordering information
  • - Advertisements or commercial solicitation

Reminder:

  • - By submitting a review, you grant to Barnes & Noble.com and its sublicensees the royalty-free, perpetual, irrevocable right and license to use the review in accordance with the Barnes & Noble.com Terms of Use.
  • - Barnes & Noble.com reserves the right not to post any review -- particularly those that do not follow the terms and conditions of these Rules. Barnes & Noble.com also reserves the right to remove any review at any time without notice.
  • - See Terms of Use for other conditions and disclaimers.
Search for Products You'd Like to Recommend

Recommend other products that relate to your review. Just search for them below and share!

Create a Pen Name

Your Pen Name is your unique identity on BN.com. It will appear on the reviews you write and other website activities. Your Pen Name cannot be edited, changed or deleted once submitted.

 
Your Pen Name can be any combination of alphanumeric characters (plus - and _), and must be at least two characters long.

Continue Anonymously

    If you find inappropriate content, please report it to Barnes & Noble
    Why is this product inappropriate?
    Comments (optional)