sensory recalibration
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2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Nienke B. Debats ◽  
Herbert Heuer ◽  
Christoph Kayser

AbstractTo organize the plethora of sensory signals from our environment into a coherent percept, our brain relies on the processes of multisensory integration and sensory recalibration. We here asked how visuo-proprioceptive integration and recalibration are shaped by the presence of more than one visual stimulus, hence paving the way to study multisensory perception under more naturalistic settings with multiple signals per sensory modality. We used a cursor-control task in which proprioceptive information on the endpoint of a reaching movement was complemented by two visual stimuli providing additional information on the movement endpoint. The visual stimuli were briefly shown, one synchronously with the hand reaching the movement endpoint, the other delayed. In Experiment 1, the judgments of hand movement endpoint revealed integration and recalibration biases oriented towards the position of the synchronous stimulus and away from the delayed one. In Experiment 2 we contrasted two alternative accounts: that only the temporally more proximal visual stimulus enters integration similar to a winner-takes-all process, or that the influences of both stimuli superpose. The proprioceptive biases revealed that integration—and likely also recalibration—are shaped by the superposed contributions of multiple stimuli rather than by only the most powerful individual one.


2021 ◽  
Author(s):  
Nienke B Debats ◽  
Herbert Heuer ◽  
Christoph Kayser

To organize the plethora of sensory signals from our environment into a coherent percept, our brain relies on the processes of multisensory integration and sensory recalibration. We here asked how visuo-proprioceptive integration and recalibration are shaped by the presence of more than one potentially relevant visual stimulus, hence paving the way to studying multisensory perception under more naturalistic settings with multiple signals per sensory modality. By manipulating the spatio-temporal correspondence between the hand position and two visual stimuli during a cursor-control task, we contrasted two alternative accounts: that only the temporally more proximal signal enters integration and recalibration similar to a winner-takes-all process, or that the influences of both visual signals superpose. Our results show that integration - and likely also recalibration - are shaped by the superposed contributions of multiple stimuli rather than by only individual ones.


2017 ◽  
Vol 102 ◽  
pp. 39-44 ◽  
Author(s):  
Tiziana Vercillo ◽  
Fang Jiang

2015 ◽  
Vol 43 (4) ◽  
pp. 245-253
Author(s):  
Tyler Johnson ◽  
Nikhil Nandakumar ◽  
Robert Kenyon ◽  
James Patton

2013 ◽  
Vol 4 ◽  
Author(s):  
Brent D. Parsons ◽  
Scott D. Novich ◽  
David M. Eagleman

2012 ◽  
Vol 2012 ◽  
pp. 1-12 ◽  
Author(s):  
Cynthia Fox ◽  
Georg Ebersbach ◽  
Lorraine Ramig ◽  
Shimon Sapir

Recent advances in neuroscience have suggested that exercise-based behavioral treatments may improve function and possibly slow progression of motor symptoms in individuals with Parkinson disease (PD). The LSVT (Lee Silverman Voice Treatment) Programs for individuals with PD have been developed and researched over the past 20 years beginning with a focus on the speech motor system (LSVT LOUD) and more recently have been extended to address limb motor systems (LSVT BIG). The unique aspects of the LSVT Programs include the combination of (a) an exclusive target on increasing amplitude (loudness in the speech motor system; bigger movements in the limb motor system), (b) a focus on sensory recalibration to help patients recognize that movements with increased amplitude are within normal limits, even if they feel “too loud” or “too big,” and (c) training self-cueing and attention to action to facilitate long-term maintenance of treatment outcomes. In addition, the intensive mode of delivery is consistent with principles that drive activity-dependent neuroplasticity and motor learning. The purpose of this paper is to provide an integrative discussion of the LSVT Programs including the rationale for their fundamentals, a summary of efficacy data, and a discussion of limitations and future directions for research.


2010 ◽  
Vol 30 (35) ◽  
pp. 11555-11557 ◽  
Author(s):  
F. R. Sarlegna ◽  
P.-M. Bernier

2009 ◽  
Vol 102 (6) ◽  
pp. 3505-3518 ◽  
Author(s):  
Erin K. Cressman ◽  
Denise Y. P. Henriques

Goal-directed reaches are rapidly adapted following exposure to misaligned visual feedback of the hand. It has been suggested that these changes in reaches result in sensory recalibration (i.e., realigning proprioceptive estimates of hand position to match the visual estimates). In the current study we tested whether visuomotor adaptation results in recalibration of hand proprioception by comparing subjects' estimates of the position at which they felt their hand was aligned with a reference marker (visual or proprioceptive) before and after aiming with a misaligned cursor. The misaligned cursor was either translated or rotated to the right of the actual hand location. On the estimation trials, we did not allow subjects to freely move their hands into position. Instead, a robot manipulandum either passively positioned the hand ( experiments 1 and 2) or subjects moved their hand along a robot-generated constrained pathway ( experiments 3 and 4). We found that regardless of experimental manipulation, subjects' proprioceptive estimates of hand position were more biased to the left after visuomotor adaptation. The leftward shift in subjects' estimates was in the same direction and one third of the magnitude of the adapted movement. This suggests that in addition to recalibrating the sensorimotor transformations underlying reaching movements, visuomotor adaptation results in partial proprioceptive recalibration.


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