scholarly journals Dexterous Hand Control Through Fascicular Targeting (HAPTIX-DEFT)

2017 ◽  
Vol 42 (9) ◽  
pp. S8-S9 ◽  
Author(s):  
Jonathan Cheng ◽  
Stephen Helms Tillery ◽  
John Miguelez ◽  
John Lachapelle ◽  
Edward Keefer
Keyword(s):  
2019 ◽  
Author(s):  
James M. Goodman ◽  
Gregg A. Tabot ◽  
Alex S. Lee ◽  
Aneesha K. Suresh ◽  
Alexander T. Rajan ◽  
...  

SummaryDexterous hand control requires not only a sophisticated motor system but also a sensory system to provide tactile and proprioceptive feedback. To date, the study of the neural basis of proprioception in cortex has focused primarily on reaching movements, at the expense of hand-specific behaviors such as grasp. To fill this gap, we record both the time-varying hand kinematics and the neural activity evoked in somatosensory and motor cortices as monkeys grasp a variety of different objects. We find that neurons in somatosensory cortex, as well as in motor cortex, preferentially track postures of multi-joint combinations spanning the entire hand. This contrasts with neural responses during reaching movements, which preferentially track movement kinematics of the arm rather than its postural configuration. These results suggest different representations of arm and hand movements likely adapted to suit the different functional roles of these two effectors.


2019 ◽  
Vol 22 (4) ◽  
pp. 529-533 ◽  
Author(s):  
Jeffrey Weiler ◽  
Paul L. Gribble ◽  
J. Andrew Pruszynski

2011 ◽  
Vol 26 (3) ◽  
pp. 275-281 ◽  
Author(s):  
Mario Tombini ◽  
Jacopo Rigosa ◽  
Filippo Zappasodi ◽  
Camillo Porcaro ◽  
Luca Citi ◽  
...  

2015 ◽  
Vol 22 (6) ◽  
pp. 653-657 ◽  
Author(s):  
Lee Sandquist ◽  
Alexander Paris ◽  
Daniel K. Fahim

Complete dislocation at the thoracolumbar junction is a rare occurrence, with only 4 previously reported cases in 3 separate series. Surgical procedures in the reported cases of spondyloptosis at the thoracolumbar junction have been described using instrumentation, reduction, decompression, and stabilization techniques. In this report the authors' patient presented with spondyloptosis at the thoracolumbar junction, resulting in a T-11 American Spinal Injury Association Grade A injury. The authors corrected the patient's thoracolumbar spondyloptosis with surgical reconstruction without the use of leveraged instrumented reduction. They describe a single-stage, posterior-only spinal realignment, reconstruction, and stabilization. Within months of beginning postoperative therapy, the patient enrolled and attended courses at a local college and regained personal independence by learning to drive a motor vehicle with a hand control. Two-year radiographic and clinical follow-up confirms solid fusion across the reconstruction.


2021 ◽  
Vol 5 (ISS) ◽  
pp. 1-18
Author(s):  
Futian Zhang ◽  
Sachi Mizobuchi ◽  
Wei Zhou ◽  
Edward Lank

One common task when controlling smart displays is the manipulation of menu items. Given current examples of smart displays that support distant bare hand control, in this paper we explore menu item selection tasks with three different mappings of barehand movement to target selection. Through a series of experiments, we demonstrate that Positional mapping is faster than other mappings when the target is visible but requires many clutches in large targeting spaces. Rate-based mapping is, in contrast, preferred by participants due to its perceived lower effort, despite being slightly harder to learn initially. Tradeoffs in the design of target selection in smart tv displays are discussed.


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