Impact of motor stroke on novel and conventional action metaphor comprehension

•Lesions to motor brain regions cause a deficit in comprehension of action metaphors.•Novel and conventional action metaphors are most compromised.•These data indicate that metaphors are grounded in sensorimotor representations. Previous studies indicate that damage to motor brain regions impacts co...

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Veröffentlicht in:Brain and language 2022-03, Vol.226, p.105081-105081, Article 105081
Hauptverfasser: Borelli, Eleonora, Butera, Christiana, Katirai, Andrew, Adams, Thomas C.E., Aziz-Zadeh, Lisa
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Sprache:eng
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Zusammenfassung:•Lesions to motor brain regions cause a deficit in comprehension of action metaphors.•Novel and conventional action metaphors are most compromised.•These data indicate that metaphors are grounded in sensorimotor representations. Previous studies indicate that damage to motor brain regions impacts comprehension of literal action-related language. However, whether such damage also impacts comprehension of action-metaphors remains unknown. Such a finding would support the notion that metaphors are grounded in sensorimotor representations. Here we tested this hypothesis by comparing comprehension of novel, conventional, and frozen action and non-action metaphors in 14 right-handed adults with right-sided mild to moderate paresis following left hemisphere motor stroke and 23 neurotypical participants. Consistent with our hypothesis, results indicated that only in the stroke group, accuracy for action metaphors was significantly lower than for non-action metaphors. Further, in the stroke group, accuracy was significantly worse in the following pattern: novel 
ISSN:0093-934X
1090-2155
DOI:10.1016/j.bandl.2022.105081