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The involvement of left inferior frontal and middle temporal cortices in word production unveiled by greater facilitation effects following brain damage.
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In: Neuropsychologia, vol. 121, pp. 122-134 (2018)
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Abstract:
In stroke-induced aphasia, left hemispheric lesions generally disturb the word production network. The left inferior frontal gyrus (LIFG) and the left middle temporal gyrus (LMTG) are involved in word production, but their respective contribution remains ambiguous. Previous investigations have largely focused on semantic interference to gather information about word production. Here we assessed the sensitivity of twenty-five aphasic speakers with either LIFG or LMTG lesions and matched controls to both semantic facilitation and interference in word production using the picture-word (PWP) and the blocked-cyclic naming (BCNP) paradigms. In the PWP (Exp. 1), semantic facilitation was exaggerated in participants with LIFG damage as compared to age-matched controls. In the BCNP (Exp. 2), repetition priming on production speed was larger in participants with LMTG damage than in controls, without any decrease of semantic errors. In the light of the results in the PWP, the LIFG appears to be a necessary structure to shape semantic facilitation. It might play an important role in properly adjusting the lexical selection threshold within the word production network. The results in the BCNP suggest that the LMTG conveys semantic-to-lexical connections likely involved in repetition priming and in mapping concepts to their correct lexical label. As consequences, participants with LIFG lesions possibly rely more on strategic vs automatic processes to efficiently select lexical entries in semantically competitive contexts, whereas participants with LMTG might exploit residual semantic-to-lexical activation.
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Keyword:
Adult; Aged; Aphasia; Aphasia/diagnostic imaging; Aphasia/etiology; Aphasia/physiopathology; Female; Frontal Lobe/diagnostic imaging; Frontal Lobe/physiopathology; Humans; Language production; Left inferior frontal cortex; Left middle temporal cortex; Magnetic Resonance Imaging; Male; Middle Aged; Pattern Recognition; Repetition Priming/physiology; Semantic priming; Semantics; Speech/physiology; Stroke/complications; Stroke/diagnostic imaging; Stroke/physiopathology; Temporal Lobe/diagnostic imaging; Temporal Lobe/physiopathology; Visual/physiology; Vocabulary; Young Adult
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URL: https://serval.unil.ch/notice/serval:BIB_0750601E7977
https://doi.org/10.1016/j.neuropsychologia.2018.10.026
http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_0750601E79772
https://serval.unil.ch/resource/serval:BIB_0750601E7977.P001/REF.pdf
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| 42 |
Longitudinal white matter change in frontotemporal dementia subtypes and sporadic late onset Alzheimer's disease.
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| 43 |
Longitudinal white matter change in frontotemporal dementia subtypes and sporadic late onset Alzheimer's disease.
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| 44 |
A neural network underlying intentional emotional facial expression in neurodegenerative disease.
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| 45 |
A neural network underlying intentional emotional facial expression in neurodegenerative disease.
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| 46 |
Data-driven regions of interest for longitudinal change in three variants of frontotemporal lobar degeneration.
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In: Brain and behavior, vol 7, iss 4 (2017)
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| 47 |
Observing conversational laughter in frontotemporal dementia.
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In: Journal of neurology, neurosurgery, and psychiatry, vol 88, iss 5 (2017)
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| 48 |
Observing conversational laughter in frontotemporal dementia.
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In: Journal of neurology, neurosurgery, and psychiatry, vol 88, iss 5 (2017)
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| 49 |
Data-driven regions of interest for longitudinal change in three variants of frontotemporal lobar degeneration.
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In: Brain and behavior, vol 7, iss 4 (2017)
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| 50 |
Improving language mapping in clinical fMRI through assessment of grammar.
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| 51 |
Improving language mapping in clinical fMRI through assessment of grammar.
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| 52 |
Early changes in brain structure correlate with language outcomes in children with neonatal encephalopathy.
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| 53 |
A common neural hub resolves syntactic and non-syntactic conflict through cooperation with task-specific networks.
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Hippocampal activation is associated with longitudinal amyloid accumulation and cognitive decline.
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| 55 |
You talkin' to me? Communicative talker gaze activates left-lateralized superior temporal cortex during perception of degraded speech. ...
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| 56 |
Predicting primary progressive aphasias with support vector machine approaches in structural MRI data.
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| 57 |
You talkin' to me? Communicative talker gaze activates left-lateralized superior temporal cortex during perception of degraded speech.
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| 58 |
Abnormal semantic knowledge in a case of developmental amnesia.
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In: Brain and Mind Institute Researchers' Publications (2017)
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| 59 |
Quantitative assessment of white matter injury in preterm neonates: Association with outcomes.
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In: Brain and Mind Institute Researchers' Publications (2017)
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| 60 |
Cortical thickness increases after simultaneous interpretation training.
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In: Neuropsychologia, vol. 98, pp. 212-219 (2017)
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