Muscular effort differentially mediates perception of heaviness and length via dynamic touch

Mangalam, Madhur; Conners, James D.; Singh, Tarkeshwar

doi:10.1007/s00221-018-5421-1

Cited by 11 publications

(2 citation statements)

References 37 publications

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“…But we follow a long tradition that began with Turvey, Carello and colleagues' [35,36] seminal work using the manual wielding of dowels to investigate perceptual exploration of mechanical information. Early work proposed specificity of perceptual judgements of length to the first and third moments of inertia [37,38], and this work extended as well to examine how the inertia tensor supports length and heaviness perception [39–41]. The bold proposals of the inertia tensor evoked yet further research testing the effects of wielding speed and of added weights to increase mass and offset the centre of mass [42–44].…”

Section: Introductionmentioning

confidence: 98%

Multifractal signatures of perceptual processing on anatomical sleeves of the human body

Mangalam

Carver

Kelty-Stephen

2020

J. R. Soc. Interface.

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Research into haptic perception typically concentrates on mechanoreceptors and their supporting neuronal processes. This focus risks ignoring crucial aspects of active perception. For instance, bodily movements influence the information available to mechanoreceptors, entailing that movement facilitates haptic perception. Effortful manual wielding of an object prompts feedback loops at multiple spatio-temporal scales, rippling outwards from the wielding hand to the feet, maintaining an upright posture and interweaving to produce a nonlinear web of fluctuations throughout the body. Here, we investigated whether and how this bodywide nonlinearity engenders a flow of multifractal fluctuations that could support perception of object properties via dynamic touch. Blindfolded participants manually wielded weighted dowels and reported judgements of heaviness and length. Mechanical fluctuations on the anatomical sleeves (i.e. peripheries of the body), from hand to the upper body, as well as to the postural centre of pressure, showed evidence of multifractality arising from nonlinear temporal correlations across scales. The modelling of impulse–response functions obtained from vector autoregressive analysis revealed that distinct sets of pairwise exchanges of multifractal fluctuations entailed accuracy in heaviness and length judgements. These results suggest that the accuracy of perception via dynamic touch hinges on specific flowing patterns of multifractal fluctuations that people wear on their anatomical sleeves.

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Section: Introductionmentioning

confidence: 98%

Multifractal signatures of perceptual processing on anatomical sleeves of the human body

Mangalam

Carver

Kelty-Stephen

2020

J. R. Soc. Interface.

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“…It is currently widely acknowledged that there exists a deeper relationship between movement and sound, one that goes beyond mere mechanical couplings, extending to more fundamental and pervasive cognitive schemata [24]. Interestingly, according to [158], a particular amount of muscular effort is necessarily required to perceive heaviness; in other words, a minimum threshold of muscle activation is required for the perception of weight. Drawing on this notion, it would not be a serious leap to also argue that a minimum amount of muscular activation is also required by musicians to haptically feel sound, even in cases of sound-accompanying gestures, such as MIIOs, which explains why musicians are often observed exerting effort in their hands during MIIOs while singing.…”

Section: Misconception #3: Straightforward Relationship Between Emg/m...mentioning

confidence: 99%

Multimodal Embodiment Research of Oral Music Traditions: Electromyography in Oud Performance and Education Research of Persian Art Music

Paschalidou

2024

MTI

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With the recent advent of research focusing on the body’s significance in music, the integration of physiological sensors in the context of empirical methodologies for music has also gained momentum. Given the recognition of covert muscular activity as a strong indicator of musical intentionality and the previously ascertained link between physical effort and various musical aspects, electromyography (EMG)—signals representing muscle activity—has also experienced a noticeable surge. While EMG technologies appear to hold good promise for sensing, capturing, and interpreting the dynamic properties of movement in music, which are considered innately linked to artistic expressive power, they also come with certain challenges, misconceptions, and predispositions. The paper engages in a critical examination regarding the utilisation of muscle force values from EMG sensors as indicators of physical effort and musical activity, particularly focusing on (the intuitively expected link to) sound levels. For this, it resides upon empirical work, namely practical insights drawn from a case study of music performance (Persian instrumental music) in the context of a music class. The findings indicate that muscle force can be explained by a small set of (six) statistically significant acoustic and movement features, the latter captured by a state-of-the-art (full-body inertial) motion capture system. However, no straightforward link to sound levels is evident.

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Fractal fluctuations in muscular activity contribute to judgments of length but not heaviness via dynamic touch

et al. 2019

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Muscular effort differentially mediates perception of heaviness and length via dynamic touch

Cited by 11 publications

References 37 publications

Multifractal signatures of perceptual processing on anatomical sleeves of the human body

Multifractal signatures of perceptual processing on anatomical sleeves of the human body

Multimodal Embodiment Research of Oral Music Traditions: Electromyography in Oud Performance and Education Research of Persian Art Music

Fractal fluctuations in muscular activity contribute to judgments of length but not heaviness via dynamic touch

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