Emotions alter muscle proprioceptive coding of movements in humans

Ackerley, Rochelle; Aimonetti, Jean-Marc; Ribot-Ciscar, Édith

doi:10.1038/s41598-017-08721-4

Cited by 41 publications

(36 citation statements)

References 64 publications

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“…There is now mounting evidence from human studies indicating that both muscle spindle static and dynamic sensitivity can be altered. Ackerley et al (2017) recently used microneurographic recordings of human ankle dorsiflexor muscle spindle Ia afferent activity to demonstrate increases in spindle dynamic sensitivity with unpleasant emotional state (sad music). Similarly, microneurographic recordings have been used to J Physiol 596.21 demonstrate that both static and dynamic sensitivity can be increased when attending to changes in limb position or movement velocity (Hospod et al, 2007;Ribot-Ciscar et al, 2009).…”

Section: Discussionmentioning

confidence: 99%

“…A potential contributor to balance changes that occur with height-induced postural threat could be modulations in muscle spindle dynamic sensitivity. Ackerley et al (2017) reported that unpleasant emotional state may increase ankle dorsiflexor muscle spindle dynamic responses to sinusoidal stretch, suggesting that muscle spindle sensitivity can be tuned to emotional context. Further evidence from postural threat studies has shown altered monosynaptic stretch reflexes with threats to standing balance.…”

Section: Introductionmentioning

confidence: 99%

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Increased human stretch reflex dynamic sensitivity with height‐induced postural threat

Horslen

Zaback

Inglis

et al. 2018

The Journal of Physiology

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Postural threat increases soleus tendon-tap (t-) reflexes. However, it is not known whether t-reflex changes are a result of central modulation, altered muscle spindle dynamic sensitivity or combined spindle static and dynamic sensitization. Ramp-and-hold dorsiflexion stretches of varying velocities and amplitudes were used to examine velocity- and amplitude-dependent scaling of short- (SLR) and medium-latency (MLR) stretch reflexes as an indirect indicator of spindle sensitivity. t-reflexes were also performed to replicate previous work. In the present study, we examined the effects of postural threat on SLR, MLR and t-reflex amplitude, as well as SLR-stretch velocity scaling. Forty young-healthy adults stood with one foot on a servo-controlled tilting platform and the other on a stable surface. The platform was positioned on a hydraulic lift. Threat was manipulated by having participants stand in low (height 1.1 m; away from edge) then high (height 3.5 m; at the edge) threat conditions. Soleus stretch reflexes were recorded with surface electromyography and SLRs and MLRs were probed with fixed-amplitude variable-velocity stretches. t-reflexes were evoked with Achilles tendon taps using a linear motor. SLR, MLR and t-reflexes were 11%, 9.5% and 16.9% larger, respectively, in the high compared to low threat condition. In 22 out of 40 participants, SLR amplitude was correlated to stretch velocity at both threat levels. In these participants, the gain of the SLR-velocity relationship was increased by 36.1% with high postural threat. These findings provide new supportive evidence for increased muscle spindle dynamic sensitivity with postural threat and provide further support for the context-dependent modulation of human somatosensory pathways.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Increased human stretch reflex dynamic sensitivity with height‐induced postural threat

Horslen

Zaback

Inglis

et al. 2018

The Journal of Physiology

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“…The participant's emotional state was modified by listening to classical music through headphones (Bose; Framingham, MA). The music pieces had been previously defined as reliably inducing sad (n = 9 pieces), happy (n = 7), or neutral (n = 5) affective states (see [9] for details regarding the music pieces). Before the experiment started, the participant listened to the pieces of music and rated each of them on a visual analog scale (VAS), ranging from sad (equating to 0, the saddest they could feel) to happy (equating to 10, the happiest they could feel).…”

Section: Manipulation Of Emotional Statementioning

confidence: 99%

“…the gamma fusimotor system, making the receptors more or less responsive to changes in muscle length [7,8]. Recently, we demonstrated that the encoding of body movements by muscle spindles depends on the emotional context, by altering the top down control of muscle spindle sensitivity [9]. These results were obtained via microneurography, a technique which allows the recording of axonal unitary activity in sensory fibers in superficial nerves in humans [10].…”

Section: Introductionmentioning

confidence: 97%

Emotions can alter kinesthetic acuity

Samain-Aupic

Ackerley

Aimonetti

et al. 2019

Neuroscience Letters

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Kinesthesia, the perception of our own body movements, relies on the integration of proprioceptive information arising mostly from muscle spindles, which are sensory receptors in skeletal muscles. We recently showed that emotions alter the proprioceptive messages from such muscle afferents, making them more sensitive to muscle lengthening when participants were listening sad music. Presently, we investigated whether these changes in proprioceptive feedback relating to emotional state may affect the perception of limb movements. Kinesthetic acuity was tested in 20 healthy, young adults by imposing rampand-hold movements that consisted of either plantar flexion or dorsiflexion movements of the ankle at 0.04°/s, or no movement. These were imposed during four emotional conditions (listening to neutral, sad, or happy music, or no music). The participants were asked to relax and focus on music (or nothing), and then they shifted their focus to the direction of an incoming movement. Once this had finished, they were asked its direction. Muscle activity, heart rate, and electrodermal activity were recorded during each trial, and after each music condition the participants rated the emotion felt on a visual analog scale. The rating of the emotional content of the music corroborated with changes in physiological measures. Kinesthetic acuity was also affected by the emotional state and found to be larger during the sad condition, as compared to the no music or neutral conditions. We conclude that emotion can shape our perception of movements, which we show here where feeling sadness significantly increase our kinesthetic acuity, this may be functionally relevant for the preparation of appropriate behavioral responses. Highlights • We investigated whether emotions alter the perception of limb movements • Emotions were modulated by music and kinesthetic acuity was tested at the ankle • Kinesthetic acuity increased particularly in the sad condition • Emotions increase our movement sense which may aid appropriate behavior

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“…Although sonification has demonstrated efficiency for motor rehabilitation, using music in sonification could improve the motivational component for such movement guidance . Emotional features of music can be observed even at the physiological level by modulating muscular afferences …”

Section: Introductionmentioning

confidence: 99%

Musical sonification improves motor control in Parkinson's disease: a proof of concept with handwriting

Véron-Delor

Pinto

Eusebio

et al. 2019

Annals of the New York Academy of Sciences

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A growing number of studies postulate the use of music to improve motor control in patients with Parkinson's disease (PD). The effects of music are greatly variable from one individual to the other and do not always reach the expected benefits. This study aimed to optimize the use of music in the management of movement disorders inherent to PD in a handwriting task. We developed and tested musical sonification (MS), a method that transforms in real‐time kinematic variables into music. Twelve patients with PD, on medication, and 12 healthy controls were recruited in a pretest/training/posttest design experiment. Three training sessions were compared, for which participants were asked to produce graphomotor exercises: one session with music (unrelated to handwriting), one with MS (controlled by handwriting), and one in silence. Results showed that the performance in training was better under MS than under silence or background music, for both groups. After training, the benefits of MS were still present for both groups, with a higher effect for PD patients than for control group. Our results provide a proof of concept to consider MS as a relevant auditory guidance strategy for movement rehabilitation in patients with PD.

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Emotions alter muscle proprioceptive coding of movements in humans

Cited by 41 publications

References 64 publications

Increased human stretch reflex dynamic sensitivity with height‐induced postural threat

Increased human stretch reflex dynamic sensitivity with height‐induced postural threat

Emotions can alter kinesthetic acuity

Musical sonification improves motor control in Parkinson's disease: a proof of concept with handwriting

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