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- W2054865674 abstract "In 1979, Gibson first advanced the idea that the sight of graspable objects automatically activates in the observer the repertoire of actions necessary to interact with them, even in the absence of any intention to act (“affordance effect”). The neurophysiological substrate of this effect was later identified in a class of bimodal neurons, the so-called canonical neurons, located within monkey premotor cortex. In humans, even if different behavioral studies supported the existence of affordance effect, neurophysiological investigations exploring its neural substrates showed contradictory results. Here, by means of Transcranial Magnetic Stimulation (TMS), we explored the time-course of the “affordance effect” elicited by the observation of everyday-life graspable objects on motor cortex of resting observers. We recorded motor evoked potentials (MEP) from three intrinsic hand muscles (two synergic for grasping, OP and FDI and one neutral, ADM). We found that objects’ vision determined an increased excitability at 120 milliseconds after their presentation. Moreover, this modulation was proved to be specific to the cortical representations of synergic muscles. From an evolutionary perspective, this timing perfectly fits with a fast recruitment of the motor system aimed at rapidly and accurately choosing the appropriate motor plans in a competitive environment filled with different opportunities." @default.
- W2054865674 created "2016-06-24" @default.
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- W2054865674 date "2012-11-08" @default.
- W2054865674 modified "2023-10-14" @default.
- W2054865674 title "Corticospinal Facilitation during Observation of Graspable Objects: A Transcranial Magnetic Stimulation Study" @default.
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- W2054865674 doi "https://doi.org/10.1371/journal.pone.0049025" @default.
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- W2054865674 hasPublicationYear "2012" @default.
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