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Lesions that do or do not impair digit span: a study of 816 stroke survivors
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In: Brain Commun (2021)
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Damage to Broca’s area does not contribute to long-term speech production outcome after stroke
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In: Brain (2021)
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A Data-Based Approach for Selecting Pre- and Intra-Operative Language Mapping Tasks
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In: Front Neurosci (2021)
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Right hemisphere structural adaptation and changing language skills years after left hemisphere stroke
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Language Control and Lexical Competition in Bilinguals: An Event-Related fMRI Study
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Dissociating the semantic function of two neighbouring subregions in the left lateral anterior temporal lobe
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A Trade-Off between Somatosensory and Auditory Related Brain Activity during Object Naming But Not Reading
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Abstract:
The parietal operculum, particularly the cytoarchitectonic area OP1 of the secondary somatosensory area (SII), is involved in somatosensory feedback. Using fMRI with 58 human subjects, we investigated task-dependent differences in SII/OP1 activity during three familiar speech production tasks: object naming, reading and repeatedly saying “1-2-3.” Bilateral SII/OP1 was significantly suppressed (relative to rest) during object naming, to a lesser extent when repeatedly saying “1-2-3” and not at all during reading. These results cannot be explained by task difficulty but the contrasting difference between naming and reading illustrates how the demands on somatosensory activity change with task, even when motor output (i.e., production of object names) is matched. To investigate what determined SII/OP1 deactivation during object naming, we searched the whole brain for areas where activity increased as that in SII/OP1 decreased. This across subject covariance analysis revealed a region in the right superior temporal sulcus (STS) that lies within the auditory cortex, and is activated by auditory feedback during speech production. The tradeoff between activity in SII/OP1 and STS was not observed during reading, which showed significantly more activation than naming in both SII/OP1 and STS bilaterally. These findings suggest that, although object naming is more error prone than reading, subjects can afford to rely more or less on somatosensory or auditory feedback during naming. In contrast, fast and efficient error-free reading places more consistent demands on both types of feedback, perhaps because of the potential for increased competition between lexical and sublexical codes at the articulatory level.
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Keyword:
Articles
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URL: https://doi.org/10.1523/JNEUROSCI.2292-14.2015 http://www.ncbi.nlm.nih.gov/pubmed/25788691 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4363398
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Comparing language outcomes in monolingual and bilingual stroke patients
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Inter- and Intrahemispheric Connectivity Differences When Reading Japanese Kanji and Hiragana
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Dissecting the functional anatomy of auditory word repetition
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The Importance of Premotor Cortex for Supporting Speech Production after Left Capsular-Putaminal Damage
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Sensory-to-motor integration during auditory repetition: a combined fMRI and lesion study
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The Angular Gyrus: Multiple Functions and Multiple Subdivisions
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Inter- and Intrahemispheric Connectivity Differences When Reading Japanese Kanji and Hiragana
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Inter- and Intrahemispheric Connectivity Differences When Reading Japanese Kanji and Hiragana
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Auditory–motor interactions for the production of native and non-native speech
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Where, When and Why Brain Activation Differs for Bilinguals and Monolinguals during Picture Naming and Reading Aloud
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Where, When and Why Brain Activation Differs for Bilinguals and Monolinguals during Picture Naming and Reading Aloud
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