Subj : Prediction may be key to eye-and-hand co
To   : All
From : ScienceDaily
Date : Mon Jun 05 2023 22:30:44

 Prediction may be key to eye-and-hand coordination 

  Date:
      June 5, 2023
  Source:
      University of Rochester Medical Center
  Summary:
      Researchers have found that the ability to visually predict movement
      may be an important part of the ability to make a great catch --
      or grab a moving object.


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FULL STORY
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Have you ever made a great catch -- like saving a phone from dropping into
a toilet or catching an indoor cat from running outside? Those skills --
the ability to grab a moving object -- takes precise interactions within
and between our visual and motor systems. Researchers at the Del Monte
Institute for Neuroscience at the University of Rochester have found
that the ability to visually predict movement may be an important part
of the ability to make a great catch -- or grab a moving object.

"We were able to develop a method that allowed us to analyze behaviors in
a natural environment with high precision, which is important because, as
we showed, behavioral patterns differ in a controlled setting," said Kuan
Hong Wang, PhD, a Dean's Professor of Neuroscience at the University of
Rochester Medical Center. Wang led the study out today in Current Biology
in collaboration with Jude Mitchell, PhD, assistant professor of Brain
and Cognitive Sciences at the University of Rochester, and Luke Shaw,
a graduate student in the Neuroscience Graduate Program at the School of
Medicine & Dentistry at the University of Rochester. "Understanding how
natural behaviors work will give us better insight into what is going
awry in an array of neurological disorders."  Researchers used multiple
high-speed cameras and DeepLabCut -- an AI method that uses video data
to find key points on the hand and arm to measure movements -- to record
where the primate is looking and the movement of the arm and hand as it
reaches and catches moving crickets. Researchers found an 80- millisecond
delay in the animal's visuomotor behavior -- the moment when vision and
movement click and work together to direct the hand toward the target.

Despite this measurable delay, the primates still grabbed the crickets,
meaning that they had to predict the cricket's movement. Using data of
both the primates and the crickets the researchers were able to build
a detailed model of vision guided reaching behavior.

"These findings allow us to identify unique behavioral control
strategies for mechanistic studies and engineering applications,"
said Wang. "Visuomotor control problems exist in many neurological
disorders due to brain lesions, stroke, and genetic factors. This
research may help develop computational behavior analysis strategies to
precisely characterize behavioral alterations in naturalistic settings
and understand their underlying causes."  This work was supported by
the National Institute of Health, the Schmitt Program of Integrative
Neuroscience, and the Del Monte Institute for Neuroscience Pilot Program.

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Story Source: Materials provided by
University_of_Rochester_Medical_Center. Original written by Kelsie Smith
Hayduk. Note: Content may be edited for style and length.


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Journal Reference:
   1. Luke Shaw, Kuan Hong Wang, Jude Mitchell. Fast prediction in
   marmoset
      reach-to-grasp movements for dynamic prey. Current Biology, 2023;
      DOI: 10.1016/j.cub.2023.05.032
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Link to news story:
https://www.sciencedaily.com/releases/2023/06/230605180539.htm

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