Abstract：
:Adaptation of movement may be driven by the difference between planned and actual motor performance, or the difference between expected and actual sensory consequences of movement. To identify how the nervous system differentially uses these signals, we asked: does motor adaptation occur when movement errors are irrelevant to the task goal? Participants reached on a digitizing tablet from a fixed start location to one of three targets: a point, an arc, or a ray. For the arc, reaches could be in any direction, but to a specific extent. For the ray, reaches could be to any distance, but in a targeted direction. After baseline reaching to the point, the direction or extent of continuous visual feedback was perturbed during training with either a cursor rotation or gain, respectively, while reaching to either the ray (goal = direction) or the arc (goal = extent). The perturbation, therefore, was either relevant or irrelevant to the task goal, depending on target type. During interspersed catch trials, the perturbation was removed and the target switched back to the point, identical to baseline. Although the goal of baseline and catch trials was the same, significant aftereffects in catch trials indicated behavioral adaptation in response to the perturbation. Adaptation occurred regardless of whether the perturbation was relevant to the task, and it was independent of feedback control. The presence of adaptation orthogonal to task demands supports the hypothesis that the nervous system can rely on sensory prediction to drive motor learning that can generalize across tasks.
journal_name
J Neurophysioljournal_title
Journal of neurophysiologyauthors
Schaefer SY,Shelly IL,Thoroughman KAdoi
10.1152/jn.00273.2011subject
Has Abstractpub_date
2012-02-01 00:00:00pages
1247-56issue
4eissn
0022-3077issn
1522-1598pii
jn.00273.2011journal_volume
107pub_type
杂志文章abstract：:Surface electromyograms (EMG) and force were recorded during repeated involuntary spasms of paralyzed triceps surae muscles of four men with chronic cervical spinal cord injury. The firing rates of 78 medial gastrocnemius (MG) motor units also were recorded intramuscularly with tungsten microelectrodes. Spasms typical...
journal_title：Journal of neurophysiology
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doi：10.1152/jn.1997.77.5.2847
更新日期：1997-05-01 00:00:00
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journal_title：Journal of neurophysiology
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doi：10.1152/jn.1988.59.3.833
更新日期：1988-03-01 00:00:00
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更新日期：2017-04-01 00:00:00
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更新日期：2018-01-01 00:00:00
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更新日期：2010-06-01 00:00:00
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pub_type： 杂志文章
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更新日期：2008-10-01 00:00:00
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journal_title：Journal of neurophysiology
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更新日期：2013-12-01 00:00:00
abstract：:1. Single-unit activity was recorded from 215 neurons in the medial bulbar reticular formation during the masticatory sequence, from intake to deglutition, of 3 kinds of food (cat food pellets, canned fish, and milk) in 8 chronically prepared, unanesthetized, spontaneously respiring cats with their head fixed to a ste...
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pub_type： 杂志文章
doi：10.1152/jn.1988.60.4.1333
更新日期：1988-10-01 00:00:00
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pub_type： 杂志文章
doi：10.1152/jn.1991.66.6.2125
更新日期：1991-12-01 00:00:00
abstract：:We show that fast bimanual coordinative feedback responses can be reversed with changes in task goals. Participants moved a flexible virtual object across a finish line with an upward movement of both hands. In one condition, the middle of the object had to be aligned with a spatial goal at the end of the movement. In...
journal_title：Journal of neurophysiology
pub_type： 杂志文章
doi：10.1152/jn.90887.2008
更新日期：2009-01-01 00:00:00
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journal_title：Journal of neurophysiology
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更新日期：2007-03-01 00:00:00
abstract：:1. Somatic K currents of cultured hippocampal, striatal, and spinal cord neurons of embryonic rat were recorded under voltage clamp in membrane spheres ("blebs") excised by means of a tight-seal pipette. 2. The somatic K current in blebs was subject to rapid and near complete inactivation during 300-ms depolarizations...
journal_title：Journal of neurophysiology
pub_type： 杂志文章
doi：10.1152/jn.1992.68.5.1708
更新日期：1992-11-01 00:00:00
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更新日期：2015-03-01 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2005-03-01 00:00:00
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journal_title：Journal of neurophysiology
pub_type： 杂志文章
doi：10.1152/jn.1986.56.1.50
更新日期：1986-07-01 00:00:00
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更新日期：1996-07-01 00:00:00
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更新日期：1985-08-01 00:00:00
abstract：:The aim of this study is to assess brain activity measured during continuous performance of design tracing tasks. Three issues were addressed: identification of brain areas involved in performing maze and square tracing tasks, investigation of differences and similarities in these areas related to dominant and nondomi...
journal_title：Journal of neurophysiology
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更新日期：1998-10-01 00:00:00
abstract：:A tool or probe often functions as an extension of the hand, transmitting vibrations to the hand to produce a percept of the object contacting the tool or probe. This paper reports the psychophysical results of a combined psychophysical and neurophysiological study of the perception of vibration transmitted through a ...
journal_title：Journal of neurophysiology
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更新日期：2006-02-01 00:00:00
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journal_title：Journal of neurophysiology
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更新日期：2019-01-01 00:00:00
abstract：:Complex movements are generally thought to consist of a series of simpler elements. If this is so, how does the sensorimotor system assemble the pieces? This study recorded and evaluated sequences of arm movements to various targets placed in three-dimensional (3D) space. Subjects performed sequences consisting of sin...
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更新日期：2003-06-01 00:00:00
abstract：:It is well recognized that the brain uses sensory information to accurately produce motor commands. Indeed, most research into the relationship between sensory and motor systems has focused on how sensory information modulates motor function. In contrast, recent studies have begun to investigate the reverse: how senso...
journal_title：Journal of neurophysiology
pub_type： 杂志文章,随机对照试验
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更新日期：2011-05-01 00:00:00
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journal_title：Journal of neurophysiology
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更新日期：1995-12-01 00:00:00
abstract：:The dorsal lateral geniculate nucleus (dLGN) of the thalamus is the exclusive relay of retinal information en route to the visual cortex. Although much of our understanding about dLGN comes from studies done in higher mammals, such as the cat and primate, the mouse as a model organism has moved to the forefront as a t...
journal_title：Journal of neurophysiology
pub_type： 杂志文章,评审
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更新日期：2018-07-01 00:00:00
