Do imagined and executed actions share the same neural substrate?

Decety, Jean

doi:10.1016/0926-6410(95)00033-x

Cited by 531 publications

(339 citation statements)

References 54 publications

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“…It has been suggested that kinesthetic motor imagery involves the same neural network as motor planning (Jeannerod, 1994;Jeannerod and Frak, 1999), which in turn is thought to rely on the same motor structures as motor execution (Johnson-Frey, 2004;Munzert et al, 2009;Sharma et al, 2006). In support of this view, motor imagery shares a number of similarities with overt movement execution, such as behavioral (Decety and Jeannerod, 1995) and physiological parameters (Kranczioch et al, 2008(Kranczioch et al, , 2009, and, importantly, the functional neuroanatomical correlates (Decety, 1996;Lotze and Halsband, 2006;Porro et al, 1996;Szameitat et al, 2007aSzameitat et al, , 2007b. In line with these findings, mental practice, i.e.…”

Section: Introductionmentioning

confidence: 78%

Cortical activation during executed, imagined, observed, and passive wrist movements in healthy volunteers and stroke patients

et al. 2012

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Section: Introductionmentioning

confidence: 78%

Cortical activation during executed, imagined, observed, and passive wrist movements in healthy volunteers and stroke patients

et al. 2012

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“…Others have reported even task-specific patterns of electromyographic activity with ISM [17,34]. Decety [6] used magnetic resonance spectroscopy (MRS) and found no evidence for biochemical activation in the target muscle during ISM. What would be an explanation for MI-activity in the absence of electromyographic activity?…”

Section: Discussionmentioning

confidence: 99%

Electric and magnetic fields of the brain accompanying internal simulation of movement

Lang¹,

Cheyne

Höllinger³

et al. 1996

Cognitive Brain Research

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Methods of functional brain imaging have been used to identify brain structures which are active during internal simulation of movements (ISM). Between 1977 and 1993 it was consistently reported that the primary motor cortex (MI) is not active during ISM whereas other cortical areas, in particular the supplementary motor area (SMA) are active. ISM was assumed to be a situation of 'internal programming'. Brain systems involved in ISM or 'programming' were hypothesized to be superior to and separable from 'executive system' including MI. We have studied electric and magnetic fields of the brain when subjects internally simulated either a single movement or a sequence of movements. Results of the studies are consistent with the assumption that MI is active with ISM. Internally subjects experienced effort which was required to inhibit overt movements during ISM. A recent EEG study showed different patterns of cortical activity with ISM and with movement inhibition suggesting that different brain structures may be active during ISM and movement inhibition [23].

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“…However, a prominent feature of the studies mentioned above is the fact that regional cerebral activity was recorded during observation and/or mental simulation of actions, while we scanned volunteers during real production of large upper limb movements. Although considerable evidence supports the assumption that common mechanisms are involved in motor imagery and motor behaviour [e.g., Cochin et al, 1999;Decety, 1996;Decety et al, 1994;Parsons, 1994;Sirigu et al, 1996;Stephan et al, 1995], this is not true in all cases and functional differences may be found at the neuroanatomical level Gerardin et al, 2000]. A recent meta-analysis of the literature clearly showed that despite a generally good overlap between action execution, simulation, and observation, each of these target processes additionally recruits specific brain areas [Grèzes and Decety, 2001].…”

Section: A Dedicated Route For Novel Gestures Imitation Through Humanmentioning

confidence: 99%

Imaging a cognitive model of apraxia: The neural substrate of gesture‐specific cognitive processes

Peigneux

Linden

Garraux

et al. 2004

Human Brain Mapping

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Abstract:The present study aimed to ascertain the neuroanatomical basis of an influential neuropsychological model for upper limb apraxia [Rothi LJ, et al. The Neuropsychology of Action. 1997. Hove, UK: Psychology Press]. Regional cerebral blood flow was measured in healthy volunteers using H 2 15O PET during performance of four tasks commonly used for testing upper limb apraxia, i.e., pantomime of familiar gestures on verbal command, imitation of familiar gestures, imitation of novel gestures, and an action-semantic task that consisted in matching objects for functional use. We also re-analysed data from a previous PET study in which we investigated the neural basis of the visual analysis of gestures. First, we found that two sets of discrete brain areas are predominantly engaged in the imitation of familiar and novel gestures, respectively. Segregated brain activation for novel gesture imitation concur with neuropsychological reports to support the hypothesis that knowledge about the organization of the human body mediates the transition from visual perception to motor execution when imitating novel gestures [Goldenberg Neuropsychologia 1995;33:63-72]. Second, conjunction analyses revealed distinctive neural bases for most of the gesture-specific cognitive processes proposed in this cognitive model of upper limb apraxia. However, a functional analysis of brain imaging data suggested that one single memory store may be used for "to-be-perceived" and "to-be-produced" gestural representations, departing from Rothi et al.'s proposal. Based on the above considerations, we suggest and discuss a revised model for upper limb apraxia that might best account for both brain imaging findings and neuropsychological dissociations reported in the apraxia literature.

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Do imagined and executed actions share the same neural substrate?

Cited by 531 publications

References 54 publications

Cortical activation during executed, imagined, observed, and passive wrist movements in healthy volunteers and stroke patients

Cortical activation during executed, imagined, observed, and passive wrist movements in healthy volunteers and stroke patients

Electric and magnetic fields of the brain accompanying internal simulation of movement

Imaging a cognitive model of apraxia: The neural substrate of gesture‐specific cognitive processes

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