Somatosensory Plasticity and Motor Learning

Ostry, David J.; Darainy, Mohammad; Mattar, Andrew A. G.; Wong, Jeremy D.; Gribble, Paul L.

doi:10.1523/jneurosci.4571-09.2010

Cited by 252 publications

(262 citation statements)

References 30 publications

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“…On average, the shift in the felt hand position for these 32 subjects increased to approximately 4.4° and their estimates of hand position were significantly shifted by 2.8°, compared to baseline, 24 hours later. These results are similar to those found by Ostry et al (2010) where subjects retained a shift of 2 mm in perceived limb position following 24 hours after adaptation to a force-field. While the size of the retention of proprioceptive recalibration in this study appears rather small, it is similar, if not larger, than the changes in felt handmotion found by Ostry et al, such that the somatosensory changes they observed were about 10% of the size of initial reach aftereffects on Day 1 (~20 mm) compared to 17% for all our subjects and 24% for our subgroup.…”

Section: Retention Of Proprioceptive Recalibrationsupporting

confidence: 89%

“…The smooth continuous decrease in reach adaptation across trials suggests that this estimation task between the two epochs did not cause nor accelerate this decay, and that the smaller aftereffects seen in Epoch 4 are likely due to a gradual washout. In some of our other studies on this topic, we try to maintain the same level of reach adaptation by interleaving rotated-cursor training with proprioceptive estimate trials; a technique that others have also used for similar purposes (Kesten 1958;Simani et al 2007;Synofzik et al 2008;Ostry et al 2010). Nonetheless, this continuous decrease in reach aftereffects appears to saturate at approximately 5° on Day 1 (Epoch 4) and seems to be maintained into the following day at a similar level (Fig.…”

Section: Retention Of Motor Adaptationmentioning

confidence: 97%

“…Retention of the change in felt hand position was investigated using a velocitydependent force-field perturbation, and has been shown to persist at least 24 hours after adaptation (Ostry et al 2010). This change in felt limb position was measured by having subjects report the direction their hand had been deflected (left or right) during their reaches; this was measured at various intervals throughout the experiment, including before, after, and 24 hours following training.…”

Section: Retention Of Proprioceptive Recalibrationmentioning

confidence: 99%

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Retention of proprioceptive recalibration following visuomotor adaptation

et al. 2014

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This thesis builds on our laboratory's recent findings that visuomotor adaptation following reaches with a misaligned cursor not only induces changes in an individual's motor output, but their proprioceptive sense of hand position as well. Long-term changes are seen in motor adaptation, however very little is known about the retention of changes in felt hand position. We sought to evaluate whether this recalibration in proprioception, following visuomotor adaptation, is sufficiently robust to be retained the following day (~24 hours later), and if so, to determine its extent. Visuomotor adaptation was induced by having subjects perform reaches to visual targets using a cursor representing their unseen hand, which had been gradually rotated 45º counterclockwise. Motor adaptation and proprioceptive recalibration were determined by assessing subjects' reach aftereffects and changes in hand bias, respectively. We found that subjects adapted their reaches and recalibrated their sense of hand position following training with a misaligned cursor, as shown in Cressman and Henriques (2009). More importantly, subjects who showed proprioceptive recalibration in the direction of motor adaptation on Day 1 did retain changes in felt hand position and motor adaptation on Day 2. These findings suggest that in addition to motor changes, individuals are capable of retaining sensory changes in proprioception up to 24 hours later.iii

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Section: Retention Of Proprioceptive Recalibrationsupporting

confidence: 89%

Section: Retention Of Motor Adaptationmentioning

confidence: 97%

Section: Retention Of Proprioceptive Recalibrationmentioning

confidence: 99%

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Retention of proprioceptive recalibration following visuomotor adaptation

et al. 2014

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“…The resulting effect is that if the lexical context biases listeners to categorize the ambiguous sound as [f], they are subsequently more likely to classify stimuli along an [f]-[s] continuum as [f], while the inverse is found if participants are led to categorize the ambiguous sound as [s]. Further experiments with this paradigm have found that this effect can transfer to unexposed words and can remain stable for as long as 12 h (Eisner and McQueen, 2006), comparable to the durable effects seen in sensorimotor adaptation (Ostry et al, 2010;Nourouzpour et al, 2015). The apparent contradiction between the lexically-guided retuning results and the results of exp.…”

Section: Resultsmentioning

confidence: 84%

Sensorimotor adaptation affects perceptual compensation for coarticulation

Schuerman

Nagarajan

McQueen

et al. 2017

The Journal of the Acoustical Society of America

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A given speech sound will be realized differently depending on the context in which it is produced. Listeners have been found to compensate perceptually for these coarticulatory effects, yet it is unclear to what extent this effect depends on actual production experience. In this study, whether changes in motor-to-sound mappings induced by adaptation to altered auditory feedback can affect perceptual compensation for coarticulation is investigated. Specifically, whether altering how the vowel [i] is produced can affect the categorization of a stimulus continuum between an alveolar and a palatal fricative whose interpretation is dependent on vocalic context is tested. It was found that participants could be sorted into three groups based on whether they tended to oppose the direction of the shifted auditory feedback, to follow it, or a mixture of the two, and that these articulatory responses, not the shifted feedback the participants heard, correlated with changes in perception. These results indicate that sensorimotor adaptation to altered feedback can affect the perception of unaltered yet coarticulatorily-dependent speech sounds, suggesting a modulatory role of sensorimotor experience on speech perception.

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“…It is well known that motor learning engages the motor cortex directly (Rioult-Pedotti et al, 1998;Muellbacher et al, 2002) and also relies on reafferent sensory feedback, particularly proprioception, for optimization (Pavlides et al, 1993). Interestingly, motor learning also impacts on the sensory system by changing sensory function, especially proprioception (Ostry et al, 2010;Wong et al, 2011). However, it is not known whether the converse it true: that is, do interventions that change the way sensory input is processed influence motor learning?…”

Section: Introductionmentioning

confidence: 99%

Modulation of Proprioceptive Integration in the Motor Cortex Shapes Human Motor Learning

Rosenkranz¹,

Rothwell²

2012

Journal of Neuroscience

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Sensory and motor systems interact closely during movement performance. Furthermore, proprioceptive feedback from ongoing movements provides an important input for successful learning of a new motor skill. Here, we show in humans that attention to proprioceptive input during a purely sensory task can influence subsequent learning of a novel motor task. We applied low-amplitude vibration to the abductor pollicis brevis (APB) muscle of eight healthy volunteers for 15 min while they discriminated either a small change in vibration frequency or the presence of a simultaneous weak cutaneous stimulus. Before and after the sensory attention tasks, we evaluated the following in separate experiments: (1) sensorimotor interaction in the motor cortex by testing the efficacy of proprioceptive input to reduce GABA A ergic intracortical inhibition using paired-pulse transcranial magnetic stimulation, and (2) how well the same subjects learned a ballistic thumb abduction task using the APB muscle. Performance of the vibration discrimination task increased the interaction of proprioceptive input with motor cortex excitability in the APB muscle, whereas performance in the cutaneous discrimination task had the opposite effect. There was a significant correlation between the integration of proprioceptive input in the motor cortex and the motor learning gain: increasing the integration of proprioceptive input from the APB increased the rate of motor learning and reduced performance variability, while decreasing proprioceptive integration had opposite effects. These findings suggest that the sensory attention tasks transiently change how proprioceptive input is integrated into the motor cortex and that these sensory changes drive subsequent learning behavior in the human motor cortex.

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Somatosensory Plasticity and Motor Learning

Cited by 252 publications

References 30 publications

Retention of proprioceptive recalibration following visuomotor adaptation

Retention of proprioceptive recalibration following visuomotor adaptation

Sensorimotor adaptation affects perceptual compensation for coarticulation

Modulation of Proprioceptive Integration in the Motor Cortex Shapes Human Motor Learning

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