Abstract：
:Several studies have demonstrated that the human motor cortex is activated by the mere observation of actions performed by others. In the present study, we explored whether the perception of 'impoverished motion stimuli', such as shadow animations, is sufficient to activate motor areas. To do so, transcranial magnetic stimulation (TMS) was applied over the hand area of the primary motor cortex (M1) while subjects observed shadow animations depicting finger motions. Data showed that resonant motor responses in M1 were only found when a biological effector was recognized from the observed shadow animation. Interestingly, M1 responses were similar for observing shadow or real motions. Therefore, the loss of 'pictorial' movement features in a shadow animation appeared to have no effect on motor resonance in M1. In summary, these findings suggest that the 'recognition' of biological motion from sparse visual input is both necessary and sufficient to recruit motor areas. This supports the hypothesis that the motor system is involved in recognizing the actions performed by others.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Alaerts K,Van Aggelpoel T,Swinnen SP,Wenderoth Ndoi
10.1016/j.neulet.2009.06.055subject
Has Abstractpub_date
2009-09-25 00:00:00pages
240-4issue
3eissn
0304-3940issn
1872-7972pii
S0304-3940(09)00845-3journal_volume
461pub_type
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