Grammar Processing Outside the Focus of Attention: an MEG Study
Journal of Cognitive Neuroscience
Cross-talk between Language Processes and Overt Motor Behavior in the First 200 msec of Processing
Journal of Cognitive Neuroscience
Experience-dependent Plasticity of Conceptual Representations in Human Sensory-Motor Areas
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Seeing sounds and hearing sights: The influence of prior learning on current perception
Journal of Cognitive Neuroscience
Interactions between language and attention systems: Early automatic lexical processing?
Journal of Cognitive Neuroscience
Towards understanding of natural language: neurocognitive inspirations
ICANN'07 Proceedings of the 17th international conference on Artificial neural networks
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
Motor simulation during action word processing in neurosurgical patients
Journal of Cognitive Neuroscience
Journal of Cognitive Neuroscience
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The brain basis of action words may be neuron ensembles binding language- and action-related information that are dispersed over both language- and action-related cortical areas. This predicts fast spreading of neuronal activity from language areas to specific sensorimotor areas when action words semantically related to different parts of the body are being perceived. To test this, fast neurophysiological imaging was applied to reveal spatiotemporal activity patterns elicited by words with different action-related meaning. Spoken words referring to actions involving the face or leg were presented while subjects engaged in a distraction task and their brain activity was recorded using high-density magnetoencephalography. Shortly after the words could be recognized as unique lexical items, objective source localization using minimum norm current estimates revealed activation in superior temporal (130 msec) and inferior frontocentral areas (142–146 msec). Face-word stimuli activated inferior frontocentral areas more strongly than leg words, whereas the reverse was found at superior central sites (170 msec), thus reflecting the cortical somatotopy of motor actions signified by the words. Significant correlations were found between local source strengths in the frontocentral cortex calculated for all participants and their semantic ratings of the stimulus words, thus further establishing a close relationship between word meaning access and neurophysiology. These results show that meaning access in action word recognition is an early automatic process ref lected by spatiotemporal signatures of word-evoked activity. Word-related distributed neuronal assemblies with specific cortical topographies can explain the observed spatiotemporal dynamics reflecting word meaning access.