I'm sure your doctor will be able to associate this with all the action observation videos/gifs the stroke department has you viewing.
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00636/abstract
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1Institute for Psychology, Westfälische Wilhelms University, Germany
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2Center for Mind/Brain Sciences, University of Trento, Italy
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3Department of Experimental Psychology, University of Oxford, United Kingdom
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4Max Planck Institute for Neurological Research, Germany
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5Department of Neurology, University Hospital Cologne, Germany
Objects are reminiscent of actions often performed with them:
knife and apple remind us on peeling the apple or cutting it. Mnemonic
representations of object-related actions (action codes) evoked by the
sight of an object may constrain and hence facilitate recognition of
unrolling actions. The present fMRI study investigated if and how action
codes influence brain activation during action observation. The average
number of action codes (NAC) of 51 sets of objects was rated by a group
of n=24 participants. In an fMRI study, different volunteers were asked
to recognize actions performed with the same objects presented in short
videos. To disentangle areas reflecting the storage of action codes
from those exploiting them, we showed object-compatible and
object-incompatible (pantomime) actions. Areas storing action codes were
considered to positively co-vary with NAC in both object-compatible and
object-incompatible action; due to its role in tool-related tasks, we
here hypothesized left anterior inferior parietal cortex (aIPL). In
contrast, areas exploiting action codes were expected to show this
correlation only in object-compatible but not incompatible action, as
only object-compatible actions match one of the active action codes. For
this interaction, we hypothesized ventrolateral premotor cortex (PMv)
to join aIPL due to its role in biasing competition in IPL. We found
left anterior intraparietal sulcus (IPS) and left posterior middle
temporal gyrus (pMTG) to co-vary with NAC. In addition to these areas,
action codes increased activity in object-compatible action in bilateral
PMv, right IPS, and lateral occipital cortex (LO).
Findings suggest
that during action observation, the brain derives possible actions from
perceived objects, and uses this information to shape action
recognition. In particular, the number of expectable actions quantifies
the activity level at PMv, IPL, and pMTG, but only PMv reflects their
biased competition while observed action unfolds.
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