The left side of motor resonance

Sartori, Luisa; Begliomini, Chiara; Panozzo, Giulia; Garolla, Alice; Castiello, Umberto

doi:10.3389/fnhum.2014.00702

Cited by 11 publications

(8 citation statements)

References 73 publications

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“…Interestingly, this seems to be due to the meaning of the gesture rather than being the product of individual experience given that handedness did not modulate the effect (i.e., no preference was detected for right-handed participants to respond with their right vs left hand to open right hands). This seems to be in line with evidence for bimanual responses to complementary actions in right-handers as seen in Sartori, Begliomini, Penozzo, Garolla, and Castiello (2014; [ 54 ]).…”

Section: Discussionsupporting

confidence: 89%

Complementary Hand Responses Occur in Both Peri- and Extrapersonal Space

2016

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Human beings have a strong tendency to imitate. Evidence from motor priming paradigms suggests that people automatically tend to imitate observed actions such as hand gestures by performing mirror-congruent movements (e.g., lifting one’s right finger upon observing a left finger movement; from a mirror perspective). Many observed actions however, do not require mirror-congruent responses but afford complementary (fitting) responses instead (e.g., handing over a cup; shaking hands). Crucially, whereas mirror-congruent responses don't require physical interaction with another person, complementary actions often do. Given that most experiments studying motor priming have used stimuli devoid of contextual information, this space or interaction-dependency of complementary responses has not yet been assessed. To address this issue, we let participants perform a task in which they had to mirror or complement a hand gesture (fist or open hand) performed by an actor depicted either within or outside of reach. In three studies, we observed faster reaction times and less response errors for complementary relative to mirrored hand movements in response to open hand gestures (i.e., ‘hand-shaking’) irrespective of the perceived interpersonal distance of the actor. This complementary effect could not be accounted for by a low-level spatial cueing effect. These results demonstrate that humans have a strong and automatic tendency to respond by performing complementary actions. In addition, our findings underline the limitations of manipulations of space in modulating effects of motor priming and the perception of affordances.

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Section: Discussionsupporting

confidence: 89%

Complementary Hand Responses Occur in Both Peri- and Extrapersonal Space

2016

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“…Humans have exceptional abilities in relation to other primates in this regard, and a distinct feature of our species is the preferential use of the right hand over the left to perform complex motor tasks, a lateralized behavior that is referred to as handedness ( Bishop 1990 ). Human handedness has been widely investigated using rating scales ( Oldfield 1971 ; Dragovic 2004 ), behavioral tests ( Tapley and Bryden 1985 ; Schmidt et al 2000 ), and kinematics ( Flowers 1975 ; Bagesteiro and Sainburg 2002 ), and more recenly using functional magnetic resonance imaging (fMRI) ( Begliomini et al 2008 ) and transcranial magnetic stimulation (TMS) ( Sartori et al 2013 , 2014 ). However, its neuroanatomical basis in relation to cerebral connections remains largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Frontoparietal Tracts Linked to Lateralized Hand Preference and Manual Specialization

et al. 2018

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Humans show a preference for using the right hand over the left for tasks and activities of everyday life. While experimental work in non-human primates has identified the neural systems responsible for reaching and grasping, the neural basis of lateralized motor behavior in humans remains elusive. The advent of diffusion imaging tractography for studying connectional anatomy in the living human brain provides the possibility of understanding the relationship between hemispheric asymmetry, hand preference, and manual specialization. In this study, diffusion tractography was used to demonstrate an interaction between hand preference and the asymmetry of frontoparietal tracts, specifically the dorsal branch of the superior longitudinal fasciculus, responsible for visuospatial integration and motor planning. This is in contrast to the corticospinal tract and the superior cerebellar peduncle, for which asymmetry was not related to hand preference. Asymmetry of the dorsal frontoparietal tract was also highly correlated with the degree of lateralization in tasks requiring visuospatial integration and fine motor control. These results suggest a common anatomical substrate for hand preference and lateralized manual specialization in frontoparietal tracts important for visuomotor processing.

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“…Despite of the progress in EEG amplifier techniques that enable simultaneous TES and EEG recordings, some aspects of combined stimulation and recording, such as electrode positioning and preparation, pose considerable limitations for mobile applications. In conventional TES and TES–EEG experiments, conductive rubber electrodes are applied to the head using elastic bands, while saline-soaked sponges 35 – 38 or electrode paste 33 on the rubber electrodes serve to create the required electrical contact to the skin. These electrodes must be placed manually, and their positions should be determined before each application.…”

Section: Introductionmentioning

confidence: 99%

Novel bifunctional cap for simultaneous electroencephalography and transcranial electrical stimulation

Wunder

Hunold

Fiedler

et al. 2018

Sci Rep

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Neuromodulation induced by transcranial electric stimulation (TES) exhibited promising potential for clinical practice. However, the underlying mechanisms remain subject of research. The combination of TES and electroencephalography (EEG) offers great potential for investigating these mechanisms and brain function in general, especially when performed simultaneously. In conventional applications, the combination of EEG and TES suffers from limitations on the electrode level (gel for electrode-skin interface) and the usability level (preparation time, reproducibility of positioning). To overcome these limitations, we designed a bifunctional cap for simultaneous TES–EEG applications. We used novel electrode materials, namely textile stimulation electrodes and dry EEG electrodes integrated in a flexible textile cap. We verified the functionality of this cap by analysing the effect of TES on visual evoked potentials (VEPs). In accordance with previous reports using standard TES, the amplitude of the N75 component was significantly decreased post-stimulation, indicating the feasibility of using this novel flexible cap for simultaneous TES and EEG. Further, we found a significant reduction of the P100 component only during TES, indicating a different brain modulation effect during and after TES. In conclusion, the novel bifunctional cap offers a novel tool for simultaneous TES–EEG applications in clinical research, therapy monitoring and closed-loop stimulation.

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The left side of motor resonance

Cited by 11 publications

References 73 publications

Complementary Hand Responses Occur in Both Peri- and Extrapersonal Space

Complementary Hand Responses Occur in Both Peri- and Extrapersonal Space

Frontoparietal Tracts Linked to Lateralized Hand Preference and Manual Specialization

Novel bifunctional cap for simultaneous electroencephalography and transcranial electrical stimulation

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