Inter-hemispheric integration of tactile-motor responses across body parts

Tamè, Luigi; Longo, Matthew R.

doi:10.3389/fnhum.2015.00345

Cited by 8 publications

(8 citation statements)

References 78 publications

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“…Specifically, moving either the right or left hand during the observation of hand postures to-be-remembered reduces the memory span for such stimuli (Smyth and Pendleton, 1990). This is congruent with more recent studies that show bilateral activation of the hand area in the brain irrespectively of the stimulated hand (Rusconi et al, 2014;Tame and Longo, 2015;Tame et al, 2016Tame et al, , 2019.…”

Section: Memory For Action Reproductionsupporting

confidence: 86%

Beyond action observation: Neurobehavioral mechanisms of memory for visually perceived bodies and actions

Galvez-Pol

Förster

Calvo-Merino

2020

Neuroscience & Biobehavioral Reviews

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Examining the processing of others' body-related information in the perceivers' brain (action observation) is a key topic in cognitive neuroscience. However, what happens beyond the perceptual stage, when the body is not within view and it is transformed into an associative form that can be stored, updated, and later recalled, remains poorly understood. Here we examine neurobehavioural evidence on the memory processing of visually perceived bodily stimuli (dynamic actions and images of bodies).The reviewed studies indicate that encoding and maintaining bodily stimuli in memory recruits the sensorimotor system. This process arises when bodily stimuli are either recalled through action recognition or reproduction. Interestingly, the memory capacity for these stimuli is rather limited: only 2 or 3 bodily stimuli can be simultaneously held in memory. Moreover, this process is disrupted by increasing concurrent bodily operations; i.e., moving one's body, seeing or memorising additional bodies. Overall, the evidence suggests that the neural circuitry allowing us to move and feel ourselves supports the encoding, retention, and memory recall of others' visually perceived bodies.

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Section: Memory For Action Reproductionsupporting

confidence: 86%

Beyond action observation: Neurobehavioral mechanisms of memory for visually perceived bodies and actions

Galvez-Pol

Förster

Calvo-Merino

2020

Neuroscience & Biobehavioral Reviews

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“…By contrast, if sensory input and motor effector belong to different sides of the body, the information has to be integrated across hemispheres (crossed). In their study, the authors showed that the crossed-uncrossed difference in processing time was larger on the finger (2.6 ms) and forearm (1.8 ms) than on the forehead (0.9 ms; Tamè and Longo, 2015). The callosal connections and density of bilateral receptive fields (RFs) are consistent with such temporal difference.…”

Section: Integration Of Tactile Information Between the Two Sides Of mentioning

confidence: 94%

“…A recent study by Tamè and Longo (2015) provided behavioral evidence of the role of topographical organization of callosal connections in the integration of sensorimotor (i.e., touch) stimuli across the two sides of the body. Using a classical behavioral paradigm to quantify sensorimotor transfer between hemispheres, i.e., the Poffenberger paradigm (Poffenberger, 1912), the study revealed a modulation of the sensorimotor interhemispheric integration time as a function of the body part stimulated.…”

Section: Integration Of Tactile Information Between the Two Sides Of mentioning

confidence: 99%

“…Indeed, it has been shown that regions that represent the periphery of body have less dense callosal connections compared to regions that represent the center (Pandya and Vignolo, 1969; Caminiti and Sbriccoli, 1985; Iwamura et al., 2001). This result suggests that the interhemispheric integration of sensorimotor stimuli, at least in the tactile domain, varies as a function of the strength of callosal connections of the body parts (Tamè and Longo, 2015). Interestingly, the cost that is paid when processing a stimulus that is on the contralateral side with respect to the effector can be vanished when touch is delivered on a seen hand.…”

Section: Integration Of Tactile Information Between the Two Sides Of mentioning

confidence: 99%

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A Conceptual Model of Tactile Processing across Body Features of Size, Shape, Side, and Spatial Location

2019

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The processing of touch depends of multiple factors, such as the properties of the skin and type of receptors stimulated, as well as features related to the actual configuration and shape of the body itself. A large body of research has focused on the effect that the nature of the stimuli has on tactile processing. Less research, however, has focused on features beyond the nature of the touch. In this review, we focus on some features related to the body that have been investigated for less time and in a more fragmented way. These include the symmetrical quality of the two sides of the body, the postural configuration of the body, as well as the size and shape of different body parts. We will describe what we consider three key aspects: (1) how and at which stages tactile information is integrated between different parts and sides of the body; (2) how tactile signals are integrated with online and stored postural configurations of the body, regarded as priors; (3) and how tactile signals are integrated with representations of body size and shape. Here, we describe how these different body dimensions affect integration of tactile information as well as guide motor behavior by integrating them in a single model of tactile processing. We review a wide range of neuropsychological, neuroimaging, and neurophysiological data and suggest a revised model of tactile integration on the basis of the one proposed previously by Longo et al.

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“…Tactile interactions between body sides change along the proximal-distal axis. A recent example of this is provided by Tamè & Longo (2015), who showed that sensorimotor integration is modulated by the body part stimulated, when using the Poffenberger paradigm (Poffenberger, 1912). This classic behavioural paradigm has been employed to quantify sensorimotor transfer between hemispheres.…”

Section: Interactions Between Tactile Stimuli On the Two Body Sidesmentioning

confidence: 99%

Bilateral representations of touch in the primary somatosensory cortex

Tamè

Braun

Holmes

et al. 2016

Cognitive Neuropsychology

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According to current textbook knowledge, the primary somatosensory cortex (SI) supports unilateral tactile representations, whereas structures beyond SI, in particular the secondary somatosensory cortex (SII), support bilateral tactile representations. However, dexterous and well-coordinated bimanual motor tasks require early integration of bilateral tactile information. Sequential processing, first of unilateral and subsequently of bilateral sensory information, might not be sufficient to accomplish these tasks. This view of sequential processing in the somatosensory system might therefore be questioned, at least for demanding bimanual tasks. Evidence from the last 15 years is forcing a revision of this textbook notion. Studies in animals and humans indicate that SI is more than a simple relay for unilateral sensory information and, together with SII, contributes to the integration of somatosensory inputs from both sides of the body. Here, we review a series of recent works from our own and other laboratories in favour of interactions between tactile stimuli on the two sides of the body at early stages of processing. We focus on tactile processing, although a similar logic may also apply to other aspects of somatosensation. We begin by describing the basic anatomy and physiology of interhemispheric transfer, drawing on neurophysiological studies in animals and behavioural studies in humans that showed tactile interactions between body sides, both in healthy and in brain-damaged individuals. Then we describe the neural substrates of bilateral interactions in somatosensation as revealed by neurophysiological work in animals and neuroimaging studies in humans (i.e., functional magnetic resonance imaging, magnetoencephalography, and transcranial magnetic stimulation). Finally, we conclude with considerations on the dilemma of how efficiently integrating bilateral sensory information at early processing stages can coexist with more lateralized representations of somatosensory input, in the context of motor control.

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Inter-hemispheric integration of tactile-motor responses across body parts

Cited by 8 publications

References 78 publications

Beyond action observation: Neurobehavioral mechanisms of memory for visually perceived bodies and actions

Beyond action observation: Neurobehavioral mechanisms of memory for visually perceived bodies and actions

A Conceptual Model of Tactile Processing across Body Features of Size, Shape, Side, and Spatial Location

Bilateral representations of touch in the primary somatosensory cortex

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