Reach/Grasp Times with Lateral Reach Obstructions

When moving to grasp an object having adjacent obstacles that limit the space available for placing the fingers, the time for the reach/grasp is dependent on the distance of reaching and the space available for finger placement. Here we model the time taken in terms of these variables and develop ma...

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Bibliographic Details
Published inJournal of motor behavior Vol. 51; no. 4; pp. 351 - 361
Main Authors Hoffmann, Errol R., Chan, Alan H. S., Lam, Christy K. Y.
Format Journal Article
LanguageEnglish
Published United States Routledge 04.07.2019
Taylor & Francis Inc
Subjects
Algorithms
Biomechanical Phenomena
Female
Fingers - innervation
Fingers - physiology
Functional Laterality - physiology
grasping
Hand Strength - physiology
Humans
Male
models of movement
Models, Neurological
Models, Theoretical
Motor ability
obstacle avoidance
prehension
Psychomotor Performance - physiology
reaching
Young Adult
grasping
obstacle avoidance
reaching
prehension
models of movement
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Summary:When moving to grasp an object having adjacent obstacles that limit the space available for placing the fingers, the time for the reach/grasp is dependent on the distance of reaching and the space available for finger placement. Here we model the time taken in terms of these variables and develop mathematical models for the reach and grasp phases of the task and the location of obstacles. Data show that the movement to the target may be made under visual control and that, when the obstacles are close to the target object, a visually-controlled movement is made that is modeled by a modified form of Fitts' law. The time for the two components of the reach/grasp appear to be independent and linearly additive.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0022-2895
1940-1027
DOI:10.1080/00222895.2018.1485008