Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Grasping tau.

G J Savelsbergh1, H T Whiting, R J Bootsma

  • 1Faculty of Human Movement Science, Free University, Amsterdam, The Netherlands.

Journal of Experimental Psychology. Human Perception and Performance
|May 1, 1991
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Different temporal bases for body and arm movements in volleyball serve reception.

Scandinavian journal of medicine & science in sports·2015
Same author

The effects of personality and ability on speed of decisions regarding the directional aspects of ball flight.

Journal of motor behavior·2013
Same author

The development of a simple ballistic skill with and without visual control.

Journal of motor behavior·2013
Same author

The effect of exercise on the visual and auditory acuity of table-tennis players.

Journal of motor behavior·2013
Same author

Dynamic visual acuity and performance in a catching task.

Journal of motor behavior·2013
Same author

Exposure and occluded duration effects in a ball-catching skill.

Journal of motor behavior·2013

Grasping movements adjust to visual cues. When a ball

Area of Science:

  • Visual perception and motor control
  • Human-computer interaction
  • Robotics

Background:

  • The timing of grasp movements is crucial for successfully catching objects.
  • Optical expansion, the rate at which an object's image expands on the retina, is a key visual cue for predicting collision.
  • Understanding how the brain processes optical expansion is vital for developing effective human-robot interaction.

Purpose of the Study:

  • To investigate the impact of manipulated optical expansion on grasp movement timing.
  • To determine if individuals adjust their grasping actions when visual information is not veridical.
  • To explore the perception-action coupling in response to changing object size during approach.

Main Methods:

  • Direct manipulation of optical expansion patterns using luminescent balls.

Related Experiment Videos

  • Two experiments were conducted: one with binocular vision and one with monocular vision.
  • A deflating luminescent ball was used to alter the rate of optical expansion during flight.

    • Main Results:

    • The time to maximal hand closing velocity was delayed when grasping a deflating ball compared to balls of constant size.
    • Participants adjusted their hand aperture in response to different ball sizes, including the deflating ball.
    • These adjustments occurred even when participants were unaware the ball was deflating.

    Conclusions:

    • The study demonstrates a finely tuned perception-action coupling between visual information and motor responses.
    • Retinal expansion information plays a significant role in timing grasp movements.
    • The human motor system can adapt to non-veridical visual cues, suggesting robust predictive mechanisms.